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**WorkinLonghorn** · 11-11-2015, 03:52 PM

I just recently went through similar troubles and after about a dozen blown fuses I got it figured out but for me it was very complicated.

It started RIGHT after I finally replaced the broken front right turn light socket so I assumed it was the cause.

Long story made short ( no pun!) it turned out to be a wire chaffing against the rear bumper.But it would only blow a fuse occasionally and thus caused me to scratch my head bald, especially since I have trailer wiring plus camper wiring plus some sort of custom work the original owner did.

46 years of chaffing and it shorted out. I guess they don't make anything to last any more.

I would check the entire system inch by inch.

11-11-2015, 03:52 PM	#6
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,887	Re: 1970 pickup fuse blows when brakes and? I just recently went through similar troubles and after about a dozen blown fuses I got it figured out but for me it was very complicated. It started RIGHT after I finally replaced the broken front right turn light socket so I assumed it was the cause. Long story made short ( no pun!) it turned out to be a wire chaffing against the rear bumper.But it would only blow a fuse occasionally and thus caused me to scratch my head bald, especially since I have trailer wiring plus camper wiring plus some sort of custom work the original owner did. 46 years of chaffing and it shorted out. I guess they don't make anything to last any more. I would check the entire system inch by inch. __________________ '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.