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Old September 8th, 2021, 02:28 AM
Jethro Jethro is offline
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Join Date: Jul 2021
Location: Pekin, IL
Truck: 1964 I1000
Age: 57
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Default Re: Ignition switch wiring help

Quote:
Originally Posted by gmcjuniorvan View Post
1964 GMC I1000 I1500 I2500 wiring diagram.
You da MAN!
Thanks. That actually looks like it might be THE diagram I've been searching for. At least it shows the green wire I've been chasing just like it is in my truck. Goes to the ground prong on the ignition switch.

As of now I have pretty much the whole harness unwrapped in the cab. Figgered I'd try and make my own diagram. I was pretty sure that green wire had to go to ground. Now I know for sure.

I'm glad I went this far tho. I found several more electrical gremlins in the dash. I'm gonna chase the wiring all the way from stem to stern. The main objective here is functional reliability.
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