1964 TR4 - Part 3 - Positive to Negative Earth and More Electrical Issues
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- Опубликовано: 21 окт 2024
- It is time to dig into the wiring under the dash and figure out what went wrong and let the smoke out of the harness. As a bonus, let's convert the electrical system from positive to negative earth.
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Jack of all trades, electric,mechanical ,metal fabrication,and instructor. I am impressed.
You haven’t seen my upholstery skills yet lol 😂
I’m sure you don’t mean it that way but Jack of all trades is actually a derogatory term and ends “master of none” which is most definitely not true of Elin
Thanks Elin, you took all the mystery out of changing polarity. Will come in handy as the TR2 will be changed to negative ground. Great work on the wiring also, that saved a lot of cash!
The owner is very lucky that the car didn’t burn down. Another great tutorial, Elin. I never tire of your videos. This is a great project.
Fantastic video series (as always)! Wonderful work you do! When you pulled out the wiring harness, I thought I was going to die -- that is my ultimate nightmare scenario. I'd tackle paint and bodywork before even thinking about fiddling with a wiring harness. But you've given us so many good tips and procedures. It's like a professional course in wiring harness repair. Great job! The TR4 is a car I grew up with. Throughout my childhood, they were one of the most iconic and romantic cars in England -- perfect for the English countryside. It is so wonderful that you are mastering the art of restoring these gems! And your English is very, very good. There are many specialty terms that are similar in meaning but used for different contexts. It takes a lot of practice to learn all of that. You're doing great! Your Bulgarian accent is very beautiful (unlike some other accents), so don't worry about that at all. I know how hard it is to live in a foreign country and learn all the right words, especially for technical situations, and the accent. Tips: (1) To improve vocabulary and such, go back to any earlier video and "re-write" it, improving all the places where you feel you could not express yourself like a native speaker -- look up vocabulary, write the sentence as it should be in Bulgarian on Google translate and note down the differences. Mostly, we make a few fundamental mistakes that are repeated in different sentences and contexts. So, learn 10 things and you'll fix 1,000 mistakes, so to speak. (2) I know it doesn't sound like it, but English is a "sung language" -- you have to use one continuous, unbroken tone or sound for the whole sentence rather than separate the words. This is what we do when speaking any language like a native. So, just say a few sentences -- without the words -- and keep your voice "singing" until the end (as if your voice was muffled by a pillow or something). Then gradually add in the words back in but keep "singing". You'll be a pro in no time. But back to the TR6 -- absolutely fantastic job! Thank you for these videos. Be glad I don't live in Canada. I'd be visiting your workshop everyday after work and on weekends -- just to watch and learn. The videos are just as good! Oh yes, Rusty is very cute! Thank you and God bless!!
Oh my! That wiring was a horror! Good that you cleaned it up before the car went up in flames! Thanks for another great video.
Kudos on a patient and complete job on that wiring! I've done that on my TR2 & I hated every minute!
Nice job. So satisfying even for me 1000 miles away!
Impressed the heck out of me
I changed the polarity on my mk2 jaguar & flashed the field coil, & reversed the ammeter connections. Everything worked except the windscreen washer motor which is polarity sensitive !
Regards,
Sandy 🔧🏴
Very interesting how you switch that over. Great investigation of the problem and then knowing how to correct it.
I only ever did a polarity swap once.. It was a lot more straight forward than I thought it might be. Usually, with any electricals, there's a 'demon' hiding away to jump on you as soon as you disturb anything . Anyway, great job Elin.. The owner will be delighted and a lot safer as he drives around now.
A nice positive comment Pete ! 😁🎅🏼👍
Great to see your skills used on a consultative basis Elin; your assessment instils confidence.
On my E-type I pulled the entire harness out and laid it on the floor to label what went where. In the end I bought a new set of wiring harnesses, but I could have repaired it like you did. I remember my hands were completely black from the tape residue like your were. My finger tips were sore too from pulling at the tape.
Nice job. So much safer and reliable.
Bravo ! Elin you are a amazing automotive expert.
Admire your can do, no fear attitude.
⚡ zoom zoom ⚡
Great looking car ! TR4 in yellow 👍
I prefer the 'waterproof' heat shrink ring terminals and all terminals for that matter. We also use a label maker to identify wires if we have to dissect the harness like you did. Nice Job.
I always prefer to go with the wiring diagram instead of labeling everything, especially for a harness that has been worked on already. If it was connected wrongly before that might have caused the problem and then I will just carry on with the wrong wiring if I connect it the same way
I had the exact wiring issue on my negative ground TR4. Driving on a rough road, speedo light fell out and shorted. Lots of smoke coming out from under the dash. 1/2 hour under the dash with electrical tape and I was able to get home. 3 hours under the dash to replace the wire. Did not pull it all the way back to the glove box, although looking at how you did it, probably would have been easier.
Elin, I tend to assume that basic start up rattle is generally big ends as they see a lot more action than the main bearings however if oil pressure is super-low and the crank has done 100k plus then maybe those shells are also shot. Great series either way, good luck buddy👍🇬🇧
Looking forward to the engine coming out
Great work, you have even started saying "Earth" instead of "Ground"... now you have to learn "Dynamo" instead of "Generator" !
In fact in Bulgarian we use dynamo too :) so it is easy
You are in good shape then. If the antenna is isolated from the body then you don't get the shielding effect and the radio will pick up more interference from the car's ignition etc especially on AM (medium wave). so going with a negative earth will fix this problem. Make sure that the antenna is now properly grounded to the car wing where it is mounted. Also make sure that the radio chassis is also grounded to the body.
Thanks for the lesson in basic auto electrickery, Elin. Tales me back to my apprenticeship days in the bush here in Australia, in the early 60's, Of course 6v electrics were the go then! Yep I hated electrics then and still do, with a vengeance, Admire and respect your talent across the board, Oh I remember asking you about those Knipex straight jaw multi-grips; I have found a supplier here in Perth but just wondering if they have a model / part number on them, so I can get the correct pair. (nope not cheap)..
Another great, informative video Elin; thank you!
Electrical issues drive me nuts. I think before I unwound the harness tape, I would have broken out my VOM and checked continuity and more importantly, ensure that shorts did not exist between connectors that aren't supposed to have conduction. That would double-check my visual inspection after I removed the harness covering. The 'Magic Smoke' sometimes sneaks out an almost invisible break in the insulation! lol
Is there an easy way to identify polarity sensitive components? Some old stuff isn't, while new stuff is; how do you tell?
Nice job. You will need to reverse the ammeter connections now that you have changed the battery polarity. At time 47:03 you can see the ammeter moving to the positive side when you turn on the ignition before you started the engine
Great Video, Elin! You have really stepped up your game in video production. I especially liked the beginning with the wide shots and lead in to intro, followed by close in shots. Super instructive video as well. You seemed to have a bit of problem with your microphone. Small problem tho.
when you started it up following polarity reversal, I noticed the ammeter was not responding. Maybe not an issue since you said an alternator would be installed.
FYI - when checking the wiring on my 1965 TR4A, I found some discrepancies related to the lighting switch (flash-to-pass) between how my car was wired and what the Autowire diagram showed. After checking the various forums, other TR4As had the same wiring I have. So there must have been some factory changes, perhaps based on region/country/etc. Anyway, just a heads up.
Did you disconnect the battery terminals while reversing the coil wires and attaching the positive lead to the starter and the negative ground wire to ground?
Do you think someone tried to jump start it or replace the battery hooking it up for negative ground and unhooked it quickly once they realized the let the smoke out? I’ve always said all electrical parts and engines are built with smoke installed in them and ounce you let it out somehow they are probably junk!!! Great video as always.
I think the uninsulated spade connector that was on that string of lights that I called Christmas lights touched the ground wires behind the gauges, maybe the ring terminal that I replaced and that is what let the smoke out of the black wire all the way to the indicator light. Then someone ran that yellow wire from the indicator light to ground, but maybe the light fixture came lose and the negative side touched ground again and that let the smoke out of that wire too 😂 💨
Great work that guy is lucky he has you to do the work move to the states.
Great video. You are fearless!!! One question... did you have to change anything on the voltage stabilizer? I think the old ones were mechanical but the new replacements use solid state regulators that are voltage sensitive.
Correct, the new ones are polarity sensitive, I should have mentioned that. This one is the old style and doesn’t mind the reversed polarity. Same for the signal flasher. The new ones need to be reversed too.
Elin, I’ve always called sleeves and liners the same really…
Very interesting, I thought you were going to scrap that harness, it didnt look good on the video, but you cant really evaluate it, feel the flexibility and see the fine detail. Do you think it has been rewired before?
I thought reversing the polarity was going to be really complicated but at least on this car it looks simple. That said no matter what you always make things look so simple.
Please apologise to Rusty for detaining you on the video when you should have been rescueing his ball!!
Good luck from Spain!!
How is the clock still running? A wind-up?
My TR4 was a positive ground car. Not a big problem, I only had issues with the radio and I installed a converter for that.
Wireless :)
@@RustyBeauties Riigght.. :)
No I think the clock is legit W! 😊😊😊
Elin, when you buy parts direct from the U.K. do you still have to pay all of those import charges etc that you pay from the U.S. direction?
Yes, I have to pay 13% tax on anything that comes in Canada no matter from where plus duty on some parts, depending on where they were made, not where the are imported from. Some say that parts for classic cars are duty free, but noone cares. They always charge me duty.
@@RustyBeauties yes it’s pretty rough, I purchased a new perspex helmet visor from China some weeks ago, it was only a £6 U.K. part but ended up as £19 by the time I received it six weeks later…plus it was wrong anyway ha ha! 🤣
In Canada you do not pay customs duty on antique car parts. You may get dinged with a GST charge. I haven’t paid any charges on my cars for many years and it doesn’t matter where the parts come from. If you do get charged by mistake there is a form you can get to get a refund. Ask the post office for that.
@@RustyBeauties there is something wrong with that. You should not be paying duty, GST perhaps but they don’t always apply that.
Why not fix the heater core when you had the dash pulled completely apart, it would have been the perfect time to pull it out and inspect it for minimal extra effort and expense. I would think one would want a functioning heater in your location.
If the radio doesn't have a polarity changing function then you will need a new radio since the antenna wire is connected to the chassis of the vehicle.
I believe the antenna has been insulated from the body. This is regular radio designed for negative earth car so it wouldn’t work if the antenna was grounded. I will show the radio in a future episode, it was wrapped in rubber so the body doesn’t touch ground anywhere
You are in good shape then. If the antenna is isolated from the body then you don't get the shielding effect and the radio will pick up more interference from the car's ignition etc especially on AM (medium wave). so going with a negative earth will fix this problem. Make sure that the antenna is now properly grounded to the car wing where it is mounted. Also make sure that the radio chassis is also grounded to the body.
Not that it's needed... but I'd be tempted to put in a new touch screen carplay/android auto unit behind the glovebox door.
Hi Michael, I’m also interested in those, (what do they do specifically?)
It's lucky that car isn't burnt Siena 😂
Ha ha! Yes I was thinking Autumn smoke might also be a good colour 😊
Awful early for this isn't it? :)
Great for waking people up
@@RustyBeauties I have Moo (one of our cats) for that.
She gets me up around 4:00am every morning to let her out. :)