How to add a fused circuit to your vehicle - how to fuse tap - by VOGMAN
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- Опубликовано: 1 авг 2024
- Want to connect a fused circuit / fuse tap your vehicle? Want to power an auxiliary device like a dashcam or power socket? Want it safe, reliable and with clear and simple instructions?
Here I’m looking at adding a fused circuit directly from the fuse box of a vehicle to safely power any auxiliary device adding a fuse tap using a Piggyback Fuse Holder like these...
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My car’s fuse box is not very convenient for making a video, so I used a model fuse board and a few helpful diagrams to make this really simple to understand.
I also very quickly run through some extremely basic electronics, particularly in relation to vehicles, to give you the knowledge to safely connect circuits in the future.
I ensure that the connection is safe and secure by using a piggyback fuse holder which provides a stable, reliable connection and a fused outlet.
IMPORTANT NOTE: Some folks are bothered by Piggyback Fuse Holders. I've had many comments about them. To help appease these folks I conducted a fuller investigation of the Piggyback which you can see online here - • Piggyback Fuse Holders...
The outcome of this was that in my opinion the Piggyback is safe and dependable. It can be fitted either way and will still work correctly. However, if fitted incorrect and IF the original fuse blows, then it will not provide power (until the fuse is replaced).
SAFETY CONCERN:
Whilst fitting a Piggyback Fuse Holder / Wire Tap is acceptable, there is the danger of overload. I strongly recommend watching my video dedicated to the subject here - • Piggyback Fuse Holder ...
www.vegoilguy.co.uk/auto_elec...
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Хобби
I never thought I could understand anything under the hood of a car. The instructions in this video seriously gave me an enlightening. I would press "like" a thousand times if I could.
Actually I can, but you know...
Thanks Adam 😊
Great explanation, straight to the point. No jargon, no thumping music drowning you out and very well explained.
Excellent and informative. There is only one thing I would add, it is regarding the idea of correct versus incorrect orientation of piggyback plugs.
For the example as demonstrated in the video itself, "correct - there is no appreciable difference in power supplied to both devices". This is expected behaviour. However, if we consider the construction of the piggyback plug, it becomes apparent that there is indeed a right way and a wrong way to connect them, particularly where higher current draw devices are concerned.
Remembering VOG's description of how the piggyback is constructed, there is a pin common to both fuses. For higher current draw devices this _has_ to be on the battery side (hot pin) of the fuse box. Fuses are designed to open circuit (blow) when a certain current level is exceeded, and it should be obvious that if your piggyback plug goes in the wrong way around, then the piggybacked device you've added will be drawing its current through both its fuse as well as the existing one.
i.imgur.com/SZafLle.png
On low current devices like LEDs and Go Pro cameras, you wouldn't expect any difference. Combine headlights, car fridges and the like on an incorrectly oriented piggyback plug however and you might well find yourself repeatedly blowing one of the fuses when both devices are active - it really depends on how much current you are drawing and how much margin for overcurrent your car manufacturer allowed for when they minted your vehicle.
If you're planning on using a piggyback plug, remember the section in the video where VOG shows you how to identify which fuse pins are the ignition switched power sources and which ones are always live. The pin that reads 12v off the multimeter should be the common fuse pin of the piggyback plug, both in terms of practicality and safety (at least on higher current draw devices) and it might just save you a little extra heartache in some cases.
Or you can check out some of the other videos that show you how to add extra fuses to your existing fusebox and elect to do it that way. A little more time consuming, but only a little and the end result will look tidier, as well as being considered more roadworthy in some jurisdictions.
Just my grossly overpriced two cents worth. ;-)
Clearest instruction I have watched so far. I've watched many other videos like this, but your video gives me clearest understanding of how a fuse works.
However I am concerned that toward the end, you said there is no 'wrong way' to install the fuse tap. This you prove with the two small lights.
From other videos I watched and understood, your experiment with the two lights work because the wire is not shorted. In case of shortage or overcurrent, a wrongly installed fuse tap will not blow the fuse. Instead it will continue to supply current along the wire until it burns down.
I am no electrical expert so I may be wrong.
Wow, that is absolutely the best instructional video I've ever seen anywhere. Extremely thorough, well organized, and the diagrams are fantastic. Thank you very much.
+Scott Jacobs
Thanks Scott. That's very kind of you. I always think I waffle too much ; )
Your kind words are much appreciated.
+Scott Jacobs
Hi Scott, perhaps you'll enjoy this video on Relays : ruclips.net/video/T1o29KTVbTE/видео.html
Best wishes, Geoff
I agree, the best and most understandable video. Just what I needed. The ‘wrong way round’ is a red herring, I believe.
A born educator- Thanks for clearing the cobwebs for a dunce like me!
Aside from the volume being a bit low for ambient noise, this is an excellent presentation, very clear and descriptive to understand. Vin
Many thanks for the feedback : )
This is an excellent presentation on the Add A Fuse circuit, you did a good job.It is important to install the fuse in the correct position. Yes either way will furnish the power required but not the fuse protection to the new circuit device. Once you have selected the fuse location install the add a fuse device without any fuses mounted on it. Then test to see if voltage is coming out of the lead. If there none then you have the device plug in the correct way. Then install the fuse to the device there should now be power to that lead. The fuse is now protecting the new circuit.
Which one is the lead
Damn, you’re good at this instructional stuff. Best I’ve ever seen. Very clear, nothing left out, very understandable. Thank you!
You are very right. The presentation at the end is wrong, which says that in any direction you can insert the piggyback unit. Your test idea is awesome, that helps in making sure that the current goes via fuse and not directly.
This isn't quite right. See the illustration at 8:53 - any time the top fuse is missing, whether or not the piggyback is plugged in the right way, there will be no power to the wire lead. Any time two good fuses are in the piggyback, there will be power to the wire lead, even if it's plugged in backward. The difference is if it's backward, power will go through both fuses to reach the wire lead, via the common blade. To test if the piggyback is plugged in right, you can leave the bottom fuse missing but plug in the top fuse. If there's power at the lead, the piggyback is plugged in the right way. If it's plugged in the wrong way, power will not be able to go through the bottom fuse to reach the common blade, top fuse and wire lead, so this is a valid test.
@@jhwaterf The fact the Add A Fuse works in both positions proves the illustration is incorrect as the top fuse holder must also contact the bottom fuse holder.
Great step by step explanation with easy to follow diagrams and instructions. I Believe the point about putting fuse tap in the wrong way refers to the fact that if put in wrong way the power will still go to device but it won't actually go via the fuse so if something was to blow or short circuit the fuse wouldn't be a buffer zone so the power could go direct to the device and could damage it. JJ
Great video! I typically watch videos until I'm confident enough to proceed with current project, most of the time this means watching many videos. However, your video was so well organized and explained that I will conclude my research with this video and proceed with my project without any further delay. A sincere thank you for taking the time to create and share your knowledge with myself and others!! Thank you!
Glad it was helpful!
I don't normally comment on any videos on RUclips, but I had to in this instance. This is probably the best instruction video I've seen. It's very clear and precise and just to the simple level I was looking for. It answered my questions and fears of wiring up a new dashcam to my car. I'm going to crack on and do it this weekend now! Brilliant video. Keep it up!!!
Fantastic! In one video, I found out how to find the hot side of a fuse, what the multimeter will read while testing both sides of the empty fuse holder and which part of the piggy back shuld be plugged ino the hot side.
I've looked in various forums and most of them descend into petty arguments about the correct way to do it. Opinions getting in the way of facts.
This video, on the other hand is easy to understand, concise and logical. I'm forever grateful.
Thanks Luca. I appreciate that : )
Thanks for clearly explain the difference between "switched in" and "permanent in". It helps me a lot! Thanks.
A bit late to the party but a brilliant instructional video! Simple, clear, jargon free... Perfect. Thank you
i've been searching around to gain some knowledge on how to install my dashcam properly and this is the best. Solved all questions in mind. I love you man.
Glad I could help : )
Wow, that is absolutely the best instructional video on the basics of automotive fuses I've ever seen anywhere. Thanks.
Many thanks : )
Best explanation of piggyback connectors out there. Amazing and a must-see for all those folks adding accessories to their vehicles. Excellent video!!
Thanks Rudolf : )
Clear , concise and factual.
Made maximum use of visual and audio for the explanation which speeds understanding and retention.
The tools of a real instructor.
What a relief - I just wasted the best part of two hours on another site with some apparently well-qualified and well meaning people doing their utmost to explain how a piggy back fuse worked and how to ensure a safe install. They ended up putting me on speed dial to an auto electrician - but then I detoured and found this site.
Problem solved in 12 mins 54 secs.
I dips me lid, mate.
Wow. That's possibly the most thoughtful comment anyone's ever made. Thanks : D
Man I am about to embark on pitting LED lights in the engine campartment of my Porsche and the forums are telling me to tap into 12 volts in my fuse box which I know absolutely nothing about. So I did a youtube search and came across this video. the instructions were so clear that I feel like an expert on how to add a fused circuit to the vehicle. This was made so clear and simple that I am rushing out to the car to tackle this project, which before seeing this video I had absolutely no idea what the task entailed.
Perhaps one of the best instructional I have seen on youtube. I see in the comments you reference your video on relays. I hope that is as good as this one because I really want to learn how to use relays in auto applications. Great job man!!
+Charlester Williams
Hi Chatlester,
Thanks very much for your very kind comments. When I make a video I always say to myself if it helps just one person then it was worth it, so when I hear from people like you it makes my day.
Glad I could help.
As for the relay video, you'll have to judge for yourself. It's a little more technical but now you've grasped the basics I'm confident you'll find it easy. But if you do have any problems, drop me a line. I'll do my best to help.
Best wishes,
Geoff
Only video that explained everything from the beginning. all the others were using piggyback fuse holders and i had no clue what they were doing. only video that really helped.
+Ethan Nunnally
Hi Ethan. That's very kind of you. Thanks.
Profusely explained so everyone can understand. Nice touch at the end where you make note that having it in backwards is no catastrophe. If it is in backwards, the bottom fuses the load of piggy backed circuit, which could be a good thing. On the flip side, if the bottom fuse blows, both circuits stop. No matter how you look at it, it beats the stars wrapping a wire on a fuse post that might unwind and touch both sides and negate the fuse or cause intermittent connection. It also beats the stars out of hacking the wiring loom that inevitably turns into a mystery to solve for someone later.
+Jack T
Many thanks.
I've watched heaps of these types of videos but this particular video is absolutely the "TOPS" by far!! Graphics are EXCELLENT, clear, concise & so easy to understand for mere amatuers like myself!! The voice over is also of a good standard of "English" & he doesn't talk too fast or mumble or roll his words together like certain English dialects have a habit of doing. I can find no problem within this video whereby I personally could not understand or comprehend of what was either being shown or spoken of!! Again this video needs to be the standard used for this type of on-line communication & irrespective of the subject matter as I'm sure it will admirably fit most if not all fields!! Again I reiterate that I really can't believe how "GOOD TECHNICALLY THIS VIDEO IS" Who ever put this video together rest assured is no mere amatuer & certainly knows what they are doing absolutely!!
Thanks very much Brendon 😁
What a great video! Even a numpty like me understood it. That's saying something. Thanks VogMan 👌
Thanks for this clear,informative,step by step explanation of the proper way to add a fuse circuit. All the years that I have been around and working with Electricity I had the flow of electricity ( in re guards to a light bulb ) completely backwards.
again Thanks
Paul Caldwell
Thanks Paul : )
Thank you very much for the excellent description. I wasn't aware of the in/out concept regarding the fuse box before, but it all makes sense now. (I will be installing a new dashcam with permanent wiring. The old one was just installed using the 12V outlet in the dash, which was a mess).
That's great to hear. I'm glad it was helpful for you.
Excellent,please make more videos,exactly what I was looking for "The Right Answer".
+Benny 69
Many thanks Benny. Pleased I could help.
What a fantastic simple explanation! I've been searching for days and all the 'experts' tend to use electrician talk. Well done Jeff!
Glad it was helpful!
Great example of a instructional Video Well explained, super clear Diagrams.
ABSOLUTELLY INCREDIBLE VIDEO, CONGRATULATIONS TO THIS MAN !!!!!
After this 13 minute video, I'M SMARTER ! Not too many videos do THAT !
Thank You. EXCELLENT GRAPHICS and "Hands On" display !
Glad it helped!
This is the best car wiring instruction video I have ever seen.👌😀
Glad you think so! 😁😁😁
Ive watch several videos to try and undersrand how to install a fuse box. Yours is by far the best at explainibg how it all works. Thanks.
Thanks very much. Please subscribe... the more the merrier : )
Genuinely if you have any questions / video request / etc, I will do my best to help... I can't guarantee but I will try.
Perfect explanation of a 12 volt system, I like how you start from the beginning and then add the different steps or items in place to create a new circuit, nicely understood sir thank you
That's very kind Angus : )
Thank you for this! I wanted to install some aftermarket gauges and a bluetooth module that gets soldered into the L and R channels of my oem radio and they all work! Hell yeah
Thank you Geoff. Very clearly described instruction.
Excellent informative video!! I must admit, I was brainwashed after watching so many videos and internet. This is the right way to plug in and what not :) Nicely explained with diagrams and dummy fuse box. LED experiment was eye opener!! Well done and carry on! Thank you very much.
Well…
I’ve learned something new today and thankyou for this but that plasticine illustration… only a Brit would think of that, made my day lol.
Cheers from Melbourne Australia.
this is the best, most thorough outline of a piggyback fuse holder that I have found. great work!
Many thanks Craig.
Even if I am a few years late I have to add that that's the absolutely the best presented, "How to" video I've ever seen, and I've seen a few! I have just ordered some piggyback fuse holders and I was intrigued by your video. I also read the comments about plugging in the piggyback the wrong way. It will only work correctly if the common pair on the piggyback is on the live side of the fuse (left in your video). If it is plugged in the other way it will work BUT the electricity goes through the first fuse before going through its own fuse. Therefore it's only unsafe if the fuses are different ratings.
Thank you for the instructions, it made it very clear on how to add a circuit and it cleared up the piggyback installation!
That's very kind, thanks. Do look out for my OVERLOAD video though... Piggybacks are great but if you push too much current through them you could damage other wiring.
Best wishes,
Geoff
Fantastic video, thank you. I used your video as a guide while installing an Add-a-fuse to power a USB charging port in an unused push button switch location on my dash. Answered all my questions and kept me from doing it wrong. Thanks!
Glad I could help : )
This is a very good guide. There are a couple subsets of switched circuits. Some may be "hot" in run only, some in run and accessory, some in run and start. I know this is very picky but some added accessories might "care" about when they may be provided power.
Excellent video, thank you so much. I couldn’t find a decent source anywhere to test fuses for switched live. Your video got my dash cam up and running in no time 👍🏻
One of the best DIY videos I've seen. Easy to understand, and good step-by-step instructions. Thanks VegOilGuy!
Many thanks : )
Beautifully executed. I watch this video every so often to remind myself and confirm it's right. Thank you for the amazing video and taking the time to create this masterpiece.
Wow, thank you!
INCREDIBLY helpful and informative!
seen similar videos but none so clear. love the car electrics 101. really helpful to a novice like me. makes more sense now!!!
This is an extremely thorough and talented instruction. You covered all of the bases.
Thank you very much. I was leery about using an Add-A-Circuit in my new truck, but I feel much better now.
Keep up the good work.
Precise and clear instruction. Simply excellent. Thank you.
Glad it was helpful!
I have no doubt your video and explanation of the piggy back fuse holder, and the logic supporting your approach, is by far the best help I have found on the internet.....that is for me. I so appreciate your time, and please keep helping us. Thank you
Thanks. That's much appreciated ; )
Wow thank you so much.
I'm trying to install some daylight running lights onto a Holden VE and trying to locate an ignition wire, this just saved me so much time and so informative. Thanks a million !
Glad to help.
Ok. Thanks..it's a 1973vw campervan..with the old fashioned fuses..i appreciate the advice.
Appreciate you taking the time to make such an informative video. Thank you.
It's very helpful for a project i'm going to start. Cheers.
Glad I could help.
After not understanding car wiring for the last 4 years, I came across this video.
🙌Thankyou 🙌
Glad to help : )
If you have any questions, let me know.
very useful and informative for a novice (trying to hook up an LED kit using a fuse tap). Much thanks from the east coast usa
+HamRo Zine
Many thanks. Glad it helped.
Good stuff, thank you for your help ... easy as simple and giving a full clear view of it. Thanks again
good job! plain and simple, just as an instructional video should be. greatly appreciated.
Very kind. Thanks : )
Excellent tutorial video. Good thing I did OK in high school physics. Now I can tackle future auto related projects with confidence. Thank you
High school physics... happy memories of tinkering : )
Brilliant demonstration and answered all my questions for hardwiring my dashcam, thank you.
Thanks Allen. Happy I could help : )
This is an excellent video! (the plasticine was a brilliant idea) It made things very clear and the explanations were very thorough. I am MUCH more confident with tackling my fog light installation. great job!
That's very kind.
I like to keep things simple and wherever possible try yo find and show easy ways of doing things.
I'm always happy to answer questions and take video request... I can't make promises, but I WILL do my best : )
scoured the web and youtube because my solar powered battery maintainer needs to have a live connection to the accessory plug when the ignition is off. When my ignition is off, the accessory plug has no power. This is by far the best video in the world. I was getting desperate and considered hot wiring. What a joy to see VegOilGuy . I instantly recognized him from an oil burner video. Time to subscribe!
Wow. Thank you. That's a really kind comment and it's much appreciated.
Glad to have you aboard : )
Geoff
Brilliant explanation, thanks!
I was installing my dash cam and ended up here. This is really helpful to understand the fuse box. I didn't know that I need two fuses to install my dash cam (one for original accessories and one for my dash cam). The product that I purchased from eBay has shitty instruction manual. Thank you!!
I'm pleased to help : )
Thanks for this detailed explanation
Brilliant, that clears loads up, I was puzzled why the piggy only had one cable connected, thank you n
No worries. Happy to help : )
Very easy to understand - excellent tutoring - thank you
Beautifully done. Such a clear and thorough explanation. Thanks a lot
Many thanks : )
Wow your simple explanation cleared all my doubts about dash cam hardwiring thank you!!!
+lightbike “lightbike2Vids” vids
Glad to help ; )
Many thanks
Maybe i watched 15 a 20 video’s about connecting fuses and piggyback holders. I can say this is the only one that is clear and very informative for me! Non of them was so claer and understandable as your video. Thanks a lot sir! New sub here!
That's great to hear : )
My friend you could easily be a teacher without a doubt, A+ presentation.
That's very kind : )
Just came across your excellent video of installing a piggyback fused to a fuse box really easy to understand excellent tank you 👍👍
Jeff, excellent presentation sir, learnt more than I came here for. Thank you ever so much. Cheers.
Glad I could help : )
great video mate. very simply put. straight talking no nonsense information . i want to put a charging point in my glovebox, im now really confident about doing this . keep it up mate. Gary , London
Thanks Gary. I once did the same thing... You can never have enough charging points : )
Excellent video. Explains everything in simple terms. Thanks so much.
+Michael Bond
Thanks Michael. Glad you enjoyed it. I'm always nervous that I waffle too much...
If you need any help, don't hesitate to ask. I'll do my best for you ; )
Best explanation so far bar none!!!
Thanks matey! 🏴☠️
That's very kind, thanks : )
I liked this video! straight to the point and very informative.
BRILLIANT! THANK YOU.
excellent. very helpful as I am installing a dashcam and needed to discover switched non switched to stop battery drain Many thanks
Perfect video and very very clear! Thank you.
Great tutorial. Many thanks.
At the end of the video... the issue is the piggyback fuse holder connected in the fuse box one way will connect the "device" to the +12v side of the original fuse. Connected the other way will connect the "device" to the load side of the original fuse which will put the device fuse in series with the original (larger) fuse. That is my understanding of how these piggyback fuse holders are wired.
So one way (backwards) both fuses will be in series- If the bigger fuse pops due it's device pulling too much current then the device we just installed will go out too.
One would need to measure the volts coming out of the piggyback fuse holder, with it connected to the fuse box, rather than measuring directly from the fuse box to find which way to orient the piggyback fuse holder into the fuse box. Great video by the way.
Very helpful indeed for someone like me trying to set a new circuit for car fans.
Glad to help James
Good job. Now I can hardwire my dashcam.
Cheers mate this really helped me in my fitting my new solenoid valves 👍
Thank you for teaching me something new. You sir, are very knowledgeable!
Many thanks
Came here with 0 knowledge and left with a full understanding of how to do my own fuse tap, thank you very much sir!
+MrHPJunkie
Thanks very much. You're very kind. I hope you find the knowledge helpful.
Best video I've iv seen so much detail. Thx
This is a great video and explanation. Thank you.
If RUclips content was required to be this informative and well thought out as this video was, there would be about 6 videos in total.
That's very kind.
Simple effective presentation. Informative and useful. Well done and thanks.
Great instructions 👍🏾Keep it up. God bless you Amen 🙏🏿🙏🏿🙏🏿
definitely the best explanation on this subject.
Thanks Ali. I appreciate that : )
Great video! Thanks!
This video was grear, I understand now a bit better how the electrical stuff work in a car as I wanted to install a central lock system in my car with manual lock, so I had no Idea how to get a permanent 12v. Thanks for the explaneation.
Glad to help : )
Outstanding, clear, well done and I added a USB port to the left side of my steering wheel - where left handed people mount their phones.
Many thanks !!!
very clear and informative
Yeah man, thanks from across the pond. So clear and informative!!
Many thanks : )
This is the best and the most scientific explanation
That's very kind. Thanks : )
This is the most helpful video ive seen around. Thank you so much.
That's very kind of you to say. Thanks : )
Brilliant! This video gave me the exact information I was looking for whilst making me feel like I was watching Downton Abbey! No, seriously, good work and great voice! Cheers from Washington State 😄
Thanks Robert : )
Excellent statement, truly indicative of the knowledge and presentation of this information by the "teacher".