Outstanding video and presentation. I always unwrap the blue tape on the entire harness on a long table and re-wrap it with new blue electrical tape as I unwrap. I do this it at the same time so as to keep the the harness in it original shape/configuration. You never know when the Lucas Gremlin has did its evil deed. I agree, you should always keep your original harness. Many of the connectors are no longer available. (such as the radiator thermostat sensor, brake failure sending unit connector, windshield wiper motor, door buzzer connector just to name a few. Important FYI : If one of those diodes goes out the starter motor will engage when you apply the the parking brake. This can be real bad for your starter and starter ring gear on your fly wheel if the motor is running.
@@jerryp2433 Better to be safe and have a spare connector that is no longer available to make repairs than to buy an entire harness and go through the entire removal and replacement procedure. As our MGBs get older the original equipment (even though it is old) is of way better quality/fit than these replacement parts that are made in China, India or who knows where.
be sure to subscribe. I plan on doing a follow up video when I finally get to installing the Dash. it will include all the details on what wires go to what switches etc..
7:25 these are indeed diodes, Lucas type 83225A. The numbers you mention (7633 and 7634) are the manufacturing week codes: 1976, week number 33 and 34.
Hello again Alex. I was wondering if you firgured out where the 2 green wires that are close to the diodes went to. I can't find any documentation on those 2 wires.
I could not find anything either. In my car, I just connected the two together. They were the same circuit, so they go to the same thing. Likely just a manufacturing shortcut
The wires for the flashers, or diodes run behind the glove box. Hopefully, this video answers your question ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aCaPkDaHdds.htmlsi=JxJNePRWN8OTyl78
I have a 78 MGB, there is a wiring harness that has two green wires coming from it. One wire goes to the temperature sensor. Where does the other one go? It was unplugged when I bought it. The wiring harness is located just behind the alternator, thanks
To add to the solution, solid green wires make up a lower voltage circuit that is reduced to something like 10 volts. It is used for gauges like the temp gauge, fuel gauge etc.
Hey again alex. I have the same wiring harness you have. Im trying to figure out the coil and distributor wiring. I have a ballasted system. I see that you have the segment with the 3 prong plug isolated. What i have left are 2 white/green wires together, 2 white/green wires together, 1 whte/blue wire and 1 white wire. Am i right thinking the w/g wires go to coil +, w/b wires go to coil -, w/b wire and w wire go to ballast resistor. And the long green wire goes to the distributor. Im so long winded. Sorry.
Yeah the resistor complicates the look but not necessarily the function. I have a flame thrower electronic distributor, and the coil has resistance. So my install is a bit more simplified. The thing about ballast systems is they bypass the resistor during startup to make a more powerful spark. Then once you release the key, the resistor kicks in to prevent over heating the coil.
I will lookup the diagram for you so you can set it up right. I did a video on a 67 mustang that shows that. But that won't help here (except for concept)
Hey alex. Do you have a video or image detailing the connections of the alternator and the coil. I cant fid wherè the small loo. With the three wire plug that is near the alternator wired.
I am doing a year in review and viewer Q&A I will include your question in the electrical components segment. Send me pics of your B, I will add it in the video
Hello again Alex. I basically have everything on the dash and engine wired up. However, I don't get any power to the ignition switch. I have 12.5v at the fuse box and to the in on the ignition relay. When I turn the key on, nothing happens. i assume that I should get 12.5v at the brown wire on the ignition switch. I have a good ground. Did you have any problems like this? Do you have any idea where I may look now? As of now, I am totally lost.
there is a relay on the engine bay just above the Coil. make sure the leads are connected correctly. I will try to find an image for you to see what it should look like. that is likely the issue.
so, I just had an idea... under the dash near the steering column, there are two sets of connectors that are the same shape. these are for the horn, ignition, and turn signals etc... funny thing is they fit in the wrong connector. you might want to confirm the colors match up on both ends of those connectors
@@AlexPlatacis thanks - I figured it out once I asked the question. Great idea. I will do the same. Are you going to make the blue tooth speaker fixed in place or portable.
