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Click on image for the lowdown. 
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| | | Forums66 Topics128,087 Posts1,056,119 Members48,435 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2009 Posts: 49 New Guy | | New Guy Joined: Jul 2009 Posts: 49 | Recently a friend gave me a GMC cluster gauge from his 53 GMC. I have a 50 Chevy 3100. I needed the higher oil pressure gauge due to my new 56 engine. The Battery gauge does not appear to work it does not move. Do I have to reverse the wires so it accommodates the GMC positive ground? Is it true the GMC is positive ground and the Chevy is negative ground? | | |
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