Great video! I searched for a while to find vids on updating an old car radio to add blue tooth. Too many vids do NOT show exactly how to do it, too many vids show complete hack work. I bought a very similar module from renhotecic p/n EB0042777 for about $20 USD. I fitted it to a 1971 Bendix L3UA pushbutton AM radio built for British Leyland vehicles of the period. The bluetooth module even has a mic so you can use it to make/receive calls on your cell phone just like modern cars!
Thanks so much for adding the part number! The one in the video has been sold out for ages and I've been struggling to find an alternative since I first watched this over a year ago
I just purchased BT board for a Pioneer GX-5050 AM/FM Stereo, no cassette or CD player. Once modified it will go in my 1968 VW Beetle. I wanted the vintage /no modern looking radio face. Thanks for this video.
Bro! I got the module you recommended there. and, based on your walkthrough was able to add bluetooth to my Jeep Grand Cherokee infinity gold stock head unit! It amazingly had an analog stereo switched pot for volume/power just like yours! Now I have great sound but no one would ever steal a “stock” radio! Great vid Thanks!
Great project. I was thinking to change one of my old car radio to same. But I was thinking to make it Bluetooth as well as card and USB reading audio mp3.
Yes I did a video of a bluetooth board with USB and microSD. Look back a few months, just search my channel for bluetooth and you should find it. Came with a remote control too. I wired it into my daughters car into her AUX input on her factory radio. She loves it.
Neat little board. I have a pair of Bluetooth wireless speakers that work on the 900mhz from a transmitter sold with the speakers. Unfortunately, they didn't come with 900mhz transmitter, when I picked up those speakers at a secondhand store. This receiver board could be what saves the day to get them back-up and working on a normal everyday Bluetooth freq. used by other regular Bluetooth transmitters I have lying around here at the house. I want the Bluetooth/self-built-in amplified speakers to receive XM radio signals while outdoors from a regular Bluetooth transmitter inside the house, hooked up to the XM Receiver. Each of the two self-amplified speakers I have here, can be used in both mono, and stereo modes, and can easily be moved around the outdoors without being hooked up directly with wires, so I can move them from the backyard to the front porch, by simply picking them up and moving them to a new location, even while in operation. I'm going to look more into this board you are using and see if it can be the savior of these speakers in keeping them wireless while in use. eBay price for the 900mhz transmitter would cost me around $60 to $70 in my country's currency, and that's not worth the price for what should cost around maybe $15 dollars at most for it, and it's only good for operating the 900mhz band, where this unit your showing, is good for operating in regular Bluetooth freqs. that regular, normal Bluetooth transmitters also work, link-up and operate on. I'll be looking into this further. Thanks for posting this video. You have my brain thinking in making the switch over of different Bluetooth receiving freqs. to these built-in amplified speakers.
james corvett Keep checking. There are more on the way. As I said this is the best, most useful bluetooth board I have tried yet, and now that everyone knows about it, there was likely a run, but they will get more.
I bookmarked the page, and i'll definitely keep checking. Having the relay switching is what i think makes it workable. Ive tried others that werent and it just added the Bluetooth signal to the existing signal. thats no good. And thanks for sharing!
Pretty nice board. Could be a bit smaller. I wonder how the differential output of the BT board is connected to the ground referenced input of the radio. All BT modules I have do generate excessive noise when connected to a non differential input without using one of those isolated DC-DC modules.
HDXFH Yes I have one, actually a truck full of units headed to the recycler, but i am on holidays (from my day job) so it will have to wait till i go back to work next month and then i will gut one and steal the antenna before it hits the recycle bin.
This is a great vid and just what I was looking for. I was wondering. I have an 1976 Ford F-150 with the original radio. Is this something you could do on that old AM radio? Is this something you do for a business? Like could I pay you to do this? 😀
I recently installed the same BlueTooth board to my vintage dual knob Alpine. I tapped into the volume knob like you did. The system works as it should, but when I turn the Bluetooth on and off it makes an annoying pop sound thru the speakers. Any idea on how I can suppress the “Pop” sound and continue to listen to my music. Thank you for your informative content.
I just got an old sony es-r18 and was trying to figure out how to adjust the speed. I dont see any pots on the board. it uses a canon motor and on that it has a brass piece with a hole but it doesn't seem to do anything. I thought maybe you would know how to adjust it.
Fantastic tutorial. Unfortunately that module does not seem to be available anymore . Are you able to recommend another and I'm also in UK. Many thanks
That's cool! I enjoy watching your videos, they are really educational. Can you please show us if you put this board in your tube amp or tuner? I'd like to see that. I'm curious where you learned electronics?
Hello there and thank you for the above video.. It's quite informative. I do have a request if i may. I have an older car from the 70s and i was given a receiver, cassette player to replace the original radio that doesn't work right any longer. The radio given is a Concord HPL-130. A bit more modern but not bad and It works fine. Before putting it in the car, i wanted to do the Bluetooth change as you did above. I opened it and on the volume, ON/OFF etc, pot, there seem to be a million wires neatly soldiered on the 2 boards. (One on top and one on the bottom if i remember right). I don't have any diagrams to work with and i don't want to mess it up. Can you help me by chance, as to where to solder the wires from the Bluetooth? Thank you in advance and no emergency. The car is being put away for the winter so i have the whole winter to get it done....
Neat video. Can you address the modern radios that have digital volume controls? Short of having RCA connectors on the back for other inputs, not sure how you could install that on those.
This is interesting! I had purchased a Panasonic CQ vx5500 and the previous owner had added a Bluetooth function to work through the Auxiliary mode on the unit. Everything connects, however when I begin to play music, the unit disconnects the Bluetooth signal, after playing something for about 5 seconds. What might this be? I'd be willing to open up the head unit
Doing this on my 98’ ls400 with a different board from eBay but same principle. Have the tape deck in front of me with everything opened up to get to the equalizer board perpendicularly attached to the tape reader/loader. Found the R & L music output or input depending on how you look at it. Now am trying to find switched power source. Found the pin on the radio face and ground. The pin I’m thinking it is says “pow” short for power I’m assuming. Or is that maybe just a pin to give power to the faceplate? Without a multimeter or even a power source for that matter is there a way to figure out the switch button for either the faceplate in general or the tape button?
Hi! Could you share with me the board you've got? I'm looking for doing this procedure on my 72' Beetle, but the board used in the video is no longer available. Thanks!
Hi! Loved your video. I'm thinking of doing this on my 1965 Oldsmobile. Here in Canada we don't have much AM stations left so I wonder if the automatic audio signal switching is necessary? Thanks
@@DavidGregoire_ Oh in that case I may beat you to it haha. Currently rebuilding the dash harness and restoring all the switches and dials, then hopefully the radio before hibernation's up
Hi. I really enjoy your videos all of them are very informative. I'm thinking of adding this board to the stock radio of my '89 Corvette. I realize there is no mic input on the board but will it switch when a phone call comes in or does it only switch inputs for audio?
I did this with another board. Unfortunately, you get bluetooth chatter in the background. I think a DC DC converter (like a BO5055) should solve the problem. My plan is to place it in series on the input power and ground to the board. Anyone else run in to this issue? It sounds like the sound the old GSM cell phones would make if placed next to a speaker.
I judt intalled that module and works great... well kinda, im having troubles with a weak audio, I mean I cranked the radio all the way as well the volumen of my phone and even I poke the volumen in the board but still i got a weak audio, could it be a bad ground?
Can you recommend an alternative module with the same functionality? I have an old two-shaft car radio with no external aux input that I want to do that same thing with
@12voltvids I did some digging online, and came across the Bludento B2. it offers high resolution Bluetooth. looked at some online reviews on RUclips, and will get one. only works with headunits that have cd shuttle control.
if you are going to do it you way you will need a switch so you can switch between the QAM Stereo radio input and the Bluetooth input, now a lot of radios supplied in cars have Bluetooth. but we have to thank a female actress from Austria who made America her home for inventing Bluetooth.
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz[3]) from fixed and mobile devices, and building personal area networks (PANs). Invented by Dutch electrical engineer Jaap Haartsen, working for telecom vendor Ericsson in 1994,[4] it was originally conceived as a wireless alternative to RS-232 data cables.
Why do you need a switch? This module I am showing, this specific one, not the other cheap bluetoooth ones out there has built in switching. You take the audio out from the radio preamp as it is going to the volume control and you send it to the bluetooth board, the audio return from the board goes to the input to the volume control. All switching is done on the board. That is what that relay is for, When bluetooth audio streams the mute line goes low, which trips the relay and feeds the BT audio to your radio. When the music stops, the mute line goes high, the relay de-energizes and the source audio is fed through.
Great video, and will attempt to install in my 02 camry stock radio. Can anyone advise what happens when the phone is connected to the BT module and you receive phone call? Does the BT option on phone needs to be turned off?
@@12voltvids instead of regular bluetooth receiver, will the aux pin work with mpow bluetooth receiver which is for both music and phone call? I have 02 camry LE with stock cd & cassette 86120-AA040
Bet you don't know invented Bluetooth but it might surprise you that it came from the head of a beautiful Mind who was a female actress from Austria who made America her home for inventing Bluetooth.
Heady Lamarr didn't invent bluetooth. She invented the first generation of frequency hopping, which back in those days was just analog signals that changed frequencies with every transmission so the enemy couldn't listen in because they didn't know where the next transmission would be. Japp Haartsen invented Bluetooth while working for Ericcson in the 90's
Hi there again. Im going to use this method for my 1987 Audioline 550 car radio cassette. The board im going to use www.amazon.com/dp/B07P94Z9XR/ref=mp_s_a_1_16?dchild=1&keywords=blutooth+module+drok&qid=1595251116&sr=8-16 has a audio relay with 2 connectors which are 3 pin molex sockets OUTPUT L/R/G/ And also has an AUX input which i guess is the same principle as your board will this work the same principle as you've explained I did try another board and connected the 3 wires to the filtered side of the 2 preamp output pins on the main board but this has a disadvantage as you need to run a dummy tape to activate the head which is the same tape cage as yours so i will let you know how i get on and if i could email you my results with some pictures of this radio being completely rebuilt woul be great. I would also like to say your videos are spot on and have helped me with loads through the years esp the sony video slv715 video gear wheel alignment Many thanks Darryl Plymouth UK
Just a quick update on my radio project and I can't thank you enough as it's working like a dream Many thanks for this video. And anybody reading this the radio I did this mod on was an Audioline model 550 late 1987 and the wire to look for is the grey one on the volume control and the board I used is in my link above
The link you shared is not secured, I searched for the CSR8635 on icstation and it is secured. Just a FYI . The link seems to be the legitimate , but we all must not be foolish these days.
Great video! I searched for a while to find vids on updating an old car radio to add blue tooth. Too many vids do NOT show exactly how to do it, too many vids show complete hack work. I bought a very similar module from renhotecic p/n EB0042777 for about $20 USD. I fitted it to a 1971 Bendix L3UA pushbutton AM radio built for British Leyland vehicles of the period. The bluetooth module even has a mic so you can use it to make/receive calls on your cell phone just like modern cars!
Thanks so much for adding the part number! The one in the video has been sold out for ages and I've been struggling to find an alternative since I first watched this over a year ago
I just purchased BT board for a Pioneer GX-5050 AM/FM Stereo, no cassette or CD player. Once modified it will go in my 1968 VW Beetle. I wanted the vintage /no modern looking radio face. Thanks for this video.
Bro! I got the module you recommended there. and, based on your walkthrough was able to add bluetooth to my Jeep Grand Cherokee infinity gold stock head unit! It amazingly had an analog stereo switched pot for volume/power just like yours! Now I have great sound but no one would ever steal a “stock” radio! Great vid Thanks!
I know his is a couple years old but thank you for this. This saved me $350 on a retro sound radio
Great project. I was thinking to change one of my old car radio to same. But I was thinking to make it Bluetooth as well as card and USB reading audio mp3.
Yes I did a video of a bluetooth board with USB and microSD. Look back a few months, just search my channel for bluetooth and you should find it. Came with a remote control too. I wired it into my daughters car into her AUX input on her factory radio. She loves it.
I prefer these this style of car audio because they are more durable and easy to tune
Ever get an am stereo on that radio?
Jim Reardon
This depends on the device circuit and its design
Neat little board. I have a pair of Bluetooth wireless speakers that work on the 900mhz from a transmitter sold with the speakers. Unfortunately, they didn't come with 900mhz transmitter, when I picked up those speakers at a secondhand store. This receiver board could be what saves the day to get them back-up and working on a normal everyday Bluetooth freq. used by other regular Bluetooth transmitters I have lying around here at the house. I want the Bluetooth/self-built-in amplified speakers to receive XM radio signals while outdoors from a regular Bluetooth transmitter inside the house, hooked up to the XM Receiver. Each of the two self-amplified speakers I have here, can be used in both mono, and stereo modes, and can easily be moved around the outdoors without being hooked up directly with wires, so I can move them from the backyard to the front porch, by simply picking them up and moving them to a new location, even while in operation. I'm going to look more into this board you are using and see if it can be the savior of these speakers in keeping them wireless while in use. eBay price for the 900mhz transmitter would cost me around $60 to $70 in my country's currency, and that's not worth the price for what should cost around maybe $15 dollars at most for it, and it's only good for operating the 900mhz band, where this unit your showing, is good for operating in regular Bluetooth freqs. that regular, normal Bluetooth transmitters also work, link-up and operate on. I'll be looking into this further. Thanks for posting this video. You have my brain thinking in making the switch over of different Bluetooth receiving freqs. to these built-in amplified speakers.
Fantastic, thank you for going out of your way to make this
Nice - also like the mix of songs by Metheny and DiMeola!
great tutorial dude! im thinking install this module in my 1984 Nissan Junior
That galaxy avant the exact phone I use. In 2018.It's actually old from 2011. But a very good smart phone.
Nice Casio!
Pretty neat it has the relay. Seamless integration ftw! :-)
Great video
Thank you for making this video!
Ive been wanting to add one of these to my 03' GM car with a Monsoon stereo. But it seems these have sold out soon after you posted this. lol
james corvett
Keep checking. There are more on the way. As I said this is the best, most useful bluetooth board I have tried yet, and now that everyone knows about it, there was likely a run, but they will get more.
I bookmarked the page, and i'll definitely keep checking. Having the relay switching is what i think makes it workable. Ive tried others that werent and it just added the Bluetooth signal to the existing signal. thats no good.
And thanks for sharing!
Great video as always, appreciated. :D
Pretty nice board. Could be a bit smaller. I wonder how the differential output of the BT board is connected to the ground referenced input of the radio. All BT modules I have do generate excessive noise when connected to a non differential input without using one of those isolated DC-DC modules.
No noise on this one. Have it on my home stereo tuner.
Awesome Video, the module is sold out, is there another module you'd reccomend?
Probably this is the only module out there with the audio relay-interrupt.
Thanks for sharing.
Nice video
Old routers are a great antenna source :-) and some SMA connectors
HDXFH
Yes I have one, actually a truck full of units headed to the recycler, but i am on holidays (from my day job) so it will have to wait till i go back to work next month and then i will gut one and steal the antenna before it hits the recycle bin.
Very useful, thank you for that video
This is a great vid and just what I was looking for. I was wondering. I have an 1976 Ford F-150 with the original radio. Is this something you could do on that old AM radio? Is this something you do for a business? Like could I pay you to do this? 😀
I recently installed the same BlueTooth board to my vintage dual knob Alpine. I tapped into the volume knob like you did. The system works as it should, but when I turn the Bluetooth on and off it makes an annoying pop sound thru the speakers. Any idea on how I can suppress the “Pop” sound and continue to listen to my music. Thank you for your informative content.
Put a capacitor in series with the audio outputs. A small one 4.7 to 10uf 16v should be plenty to premevt any DC that may be back feeding.
@@12voltvids Will do sir. I'll get back to you on results. Thank you.
So this will still allow you to use your eq if you have one
I just got an old sony es-r18 and was trying to figure out how to adjust the speed. I dont see any pots on the board. it uses a canon motor and on that it has a brass piece with a hole but it doesn't seem to do anything. I thought maybe you would know how to adjust it.
Fantastic tutorial. Unfortunately that module does not seem to be available anymore . Are you able to recommend another and I'm also in UK. Many thanks
I want to add Bluetooth to an old 8 track car stereo, but the module used is not in stock. Is there a similar module out there?
Any update on where to find this or similar module? No longer available at the link supplied.
Pretty slick. Thanks!
That's cool! I enjoy watching your videos, they are really educational. Can you please show us if you put this board in your tube amp or tuner? I'd like to see that. I'm curious where you learned electronics?
StealthParrot
Yes I will definately show the permanent home for it.
Nice work my freind
Thanks legend
Hello there and thank you for the above video.. It's quite informative. I do have a request if i may.
I have an older car from the 70s and i was given a receiver, cassette player to replace the original radio that doesn't work right any longer.
The radio given is a Concord HPL-130. A bit more modern but not bad and It works fine.
Before putting it in the car, i wanted to do the Bluetooth change as you did above. I opened it and on the volume, ON/OFF etc, pot, there seem to be a million wires neatly soldiered on the 2 boards. (One on top and one on the bottom if i remember right). I don't have any diagrams to work with and i don't want to mess it up.
Can you help me by chance, as to where to solder the wires from the Bluetooth?
Thank you in advance and no emergency. The car is being put away for the winter so i have the whole winter to get it done....
Let's get this guy to 100k subscribers! =-)
That's right so I can get my silver play button.
Heck yeah pal! =-)
Neat video. Can you address the modern radios that have digital volume controls? Short of having RCA connectors on the back for other inputs, not sure how you could install that on those.
This is interesting! I had purchased a Panasonic CQ vx5500 and the previous owner had added a Bluetooth function to work through the Auxiliary mode on the unit. Everything connects, however when I begin to play music, the unit disconnects the Bluetooth signal, after playing something for about 5 seconds. What might this be? I'd be willing to open up the head unit
Bluetooth board is 12 volts or 5vlt ?
Doing this on my 98’ ls400 with a different board from eBay but same principle. Have the tape deck in front of me with everything opened up to get to the equalizer board perpendicularly attached to the tape reader/loader. Found the R & L music output or input depending on how you look at it. Now am trying to find switched power source. Found the pin on the radio face and ground. The pin I’m thinking it is says “pow” short for power I’m assuming. Or is that maybe just a pin to give power to the faceplate? Without a multimeter or even a power source for that matter is there a way to figure out the switch button for either the faceplate in general or the tape button?
Hi! Could you share with me the board you've got? I'm looking for doing this procedure on my 72' Beetle, but the board used in the video is no longer available. Thanks!
Hi! Loved your video. I'm thinking of doing this on my 1965 Oldsmobile. Here in Canada we don't have much AM stations left so I wonder if the automatic audio signal switching is necessary? Thanks
Yeah ok just figured out myself that since the radio unit doesn't have any functions button I really need this auto switch thing.
Thanks again!
@@DavidGregoire_ how'd it go? I've got a 66 cadillac I'm thinking of doing the same to
@@screech1991 haven't yet. I'll check when the car comes out of hibernation in May ;)
@@DavidGregoire_ Oh in that case I may beat you to it haha. Currently rebuilding the dash harness and restoring all the switches and dials, then hopefully the radio before hibernation's up
Hi. I really enjoy your videos all of them are very informative. I'm thinking of adding this board to the stock radio of my '89 Corvette.
I realize there is no mic input on the board but will it switch when a phone call comes in or does it only switch inputs for audio?
The one I have switches its audio source when bluetooth is connected.
I did this with another board. Unfortunately, you get bluetooth chatter in the background. I think a DC DC converter (like a BO5055) should solve the problem. My plan is to place it in series on the input power and ground to the board. Anyone else run in to this issue? It sounds like the sound the old GSM cell phones would make if placed next to a speaker.
Excellent!
I judt intalled that module and works great... well kinda, im having troubles with a weak audio, I mean I cranked the radio all the way as well the volumen of my phone and even I poke the volumen in the board but still i got a weak audio, could it be a bad ground?
Can you recommend an alternative module with the same functionality? I have an old two-shaft car radio with no external aux input that I want to do that same thing with
Your suggested board is sold out. Got any alternatives? What you used is exactly what I need
No have no source of replacement.
Is there a way to add a mic so you can make and receive calls too?
i looke up the board, and you cant get them anymore. would you recommend a good quality one in 2024
Don't know of any replacements but then I haven't looked.
@12voltvids I did some digging online, and came across the Bludento B2. it offers high resolution Bluetooth. looked at some online reviews on RUclips, and will get one. only works with headunits that have cd shuttle control.
If the board with the volume control knob has an Op Amp, do you tap inbetween the output of the Op Amp or before it?
How do you hook up with electronic volume control? doing old corvette that has radio modified with antique radio module.
icstation sold out! Is there anywhere else you can buy a module like this that switches automatically?
hi can I contact USB AUX on this board?
Are these modules still available? Anyone able to share a link to them? Thank you
What brand is the board?
if you are going to do it you way you will need a switch so you can switch between the QAM Stereo radio input and the Bluetooth input, now a lot of radios supplied in cars have Bluetooth. but we have to thank a female actress from Austria who made America her home for inventing Bluetooth.
Heady Lamar didn't invent bluetooth, she invented frequent hopping, the forerunner to spread spectrum.
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz[3]) from fixed and mobile devices, and building personal area networks (PANs). Invented by Dutch electrical engineer Jaap Haartsen, working for telecom vendor Ericsson in 1994,[4] it was originally conceived as a wireless alternative to RS-232 data cables.
Why do you need a switch? This module I am showing, this specific one, not the other cheap bluetoooth ones out there has built in switching. You take the audio out from the radio preamp as it is going to the volume control and you send it to the bluetooth board, the audio return from the board goes to the input to the volume control. All switching is done on the board. That is what that relay is for, When bluetooth audio streams the mute line goes low, which trips the relay and feeds the BT audio to your radio. When the music stops, the mute line goes high, the relay de-energizes and the source audio is fed through.
he did not pay attention to your process and descriptions
@@OX71 - he was not paying because he was far too busy spreading misinformation about other things.
"So don't bitch about the quality" hahaha.
Great video, and will attempt to install in my 02 camry stock radio. Can anyone advise what happens when the phone is connected to the BT module and you receive phone call? Does the BT option on phone needs to be turned off?
Music only on this module.
@@12voltvids instead of regular bluetooth receiver, will the aux pin work with mpow bluetooth receiver which is for both music and phone call? I have 02 camry LE with stock cd & cassette 86120-AA040
another thing, theres no a version with a 3.5 mm aux jack?
If you need a 3.5mm plug on the end just get a plug and put one on the end. This is designed as a retrofit board.
@@12voltvids hummmm sorry for asking a lot but how i can make that? i mean i can still using the bluetooth function as well the aux jack?
Will this work for a stock 1977 f150 stereo?
Once you remove the unit, open it up and investigate.... then you can tell us.
How do I put one in my 1969 Ford F-250 radio
I’m doing one
can i just send you my radio? lol
No
Bet you don't know invented Bluetooth but it might surprise you that it came from the head of a beautiful Mind who was a female actress from Austria who made America her home for inventing Bluetooth.
Heady Lamarr didn't invent bluetooth. She invented the first generation of frequency hopping, which back in those days was just analog signals that changed frequencies with every transmission so the enemy couldn't listen in because they didn't know where the next transmission would be. Japp Haartsen invented Bluetooth while working for Ericcson in the 90's
Product appears to be sold out, unfortunate
Keep checking they will be getting new stock.
Good News!!! Product Pre-Sale Now, items can be restock on Aug 24th. First buy, first sending!!! ^0^
But I like my setup better it's more easy to control and more compact
3:00
Máster
♀️💪🏼
Hi there again.
Im going to use this method for my 1987 Audioline 550 car radio cassette.
The board im going to use www.amazon.com/dp/B07P94Z9XR/ref=mp_s_a_1_16?dchild=1&keywords=blutooth+module+drok&qid=1595251116&sr=8-16 has a audio relay with 2 connectors which are 3 pin molex sockets OUTPUT L/R/G/ And also has an AUX input which i guess is the same principle as your board will this work the same principle as you've explained
I did try another board and connected the 3 wires to the filtered side of the 2 preamp output pins on the main board but this has a disadvantage as you need to run a dummy tape to activate the head which is the same tape cage as yours so i will let you know how i get on and if i could email you my results with some pictures of this radio being completely rebuilt woul be great.
I would also like to say your videos are spot on and have helped me with loads through the years esp the sony video slv715 video gear wheel alignment
Many thanks
Darryl
Plymouth
UK
Just a quick update on my radio project and I can't thank you enough as it's working like a dream
Many thanks for this video.
And anybody reading this the radio I did this mod on was an Audioline model 550 late 1987 and the wire to look for is the grey one on the volume control and the board I used is in my link above
The link you shared is not secured, I searched for the CSR8635 on icstation and it is secured. Just a FYI . The link seems to be the legitimate , but we all must not be foolish these days.
I put up the link they gave me at the time. I didn't test it or even go to the link.
3:15