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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Nov 2005 Posts: 144 Shop Shark | | Shop Shark Joined: Nov 2005 Posts: 144 | On my 59 GMC, the wiring is like this:
1. Big red battery wire to starter lug
2. 14g wire from starter lug to key switch
3. 14g pink wire from ACC on key switch to fuse block
4. Glass fuse for heater
5. 14g wire over to heater switch
...
That's where my wiring "harness" stops. The previous owner dismantled the heater stuff for some reason. <shrug>
But, there should also be a NiChrome wire on ceramic system close to or on the fan speed selection switch. It acts like two or three resistors so you can alter the fan speed.
I know I had one on my 58 'cause I burned my hand on it at least once.
Otherwise, you're on track. | | |
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