Question for Electrical Experts; Fuse panel dead. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**WorkinLonghorn** · 02-16-2025, 07:33 PM

My '69 has nothing working, yet the large red wire that feeds the fuse block is live on the engine bay side. I can't remember how to fix this. Any ideas? I'm not getting any readings on the cab side of the block. Much thanks, Brian

**PbFut** · 02-16-2025, 08:37 PM

There are always hot pins on the cab side. If you are hot on engine side and dead on cab side, I would look for corrosion on that top right pin on the engine side. That pin is the power source for 95% of the truck. If you find the cab side does have always hot pins, I suspect your key switch has failed.

02-16-2025, 07:33 PM	#1
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,887	Question for Electrical Experts; Fuse panel dead. My '69 has nothing working, yet the large red wire that feeds the fuse block is live on the engine bay side. I can't remember how to fix this. Any ideas? I'm not getting any readings on the cab side of the block. Much thanks, Brian __________________ '69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.

02-16-2025, 08:37 PM	#2
PbFut Senior Member Join Date: Feb 2022 Location: Ca Posts: 688	Re: Question for Electrical Experts; Fuse panel dead. There are always hot pins on the cab side. If you are hot on engine side and dead on cab side, I would look for corrosion on that top right pin on the engine side. That pin is the power source for 95% of the truck. If you find the cab side does have always hot pins, I suspect your key switch has failed.



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