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| | | Forums66 Topics128,054 Posts1,055,782 Members48,426 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Some accessories do care if it is positive or negative ground. The power supply in a radio cares and a lot of heater motors run backwards on reversed polarity. I agree with Jerry except that I think its quite a bit more than 10%. I bought a heater for my 1950 GMC in about 1958 from a wrecking yard. It came out of a 55 Ford 2 ton. The wrecking yard had sold it to a guy with a Chev and he brought it back because the motor ran backwards. The guy at the wrecking yard didn't know that 50 GMC and 55 Ford both use posi ground. | | |
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