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08-04-2019, 03:44 PM | #1 |
Registered User
Join Date: Jun 2019
Location: Chehalis, WA
Posts: 4
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1972 C10 underhood wiring help
Trying to get the wiring sorted on this 72 - have some wires I can't figure out what they do. The first picture is on the firewall, second is inside the cab. I've been looking hard at the wiring diagram and just stuck on a few wires.
The big red wire with the yellow connector looks like it goes to the ignition unfused in the fuse block, and I don't need that so I'm going to pull it out. Not seeing the brown-white cross connect, but I see it's circuit 141 for the "TCS SOL"? What is that? Not sure what the blue and black wires are - they are taped off so maybe not needed anymore Thank you for your help! |
08-04-2019, 05:43 PM | #2 |
Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,761
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Re: 1972 C10 underhood wiring help
TCS was the transmission-controlled spark solenoid. You don't need it.
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08-04-2019, 07:31 PM | #3 |
Registered User
Join Date: Jun 2019
Location: Chehalis, WA
Posts: 4
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Re: 1972 C10 underhood wiring help
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