Hatzie, I have a 1980 Truck wiring diagram that is different than the one that you have scanned in. I really appreciate your work on all this valuable information, just want to help and contribute anything I can. Send me a PM with the address and I'll send it to you to scan in if you wish.
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1980 Chevy K10 Silverado -->
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My wife told me I spent too much time on Facebook. So I bought an old truck. Now she wishes I was on Facebook, it was cheaper.