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Click on image for the lowdown. 
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| | | Forums66 Topics128,090 Posts1,056,016 Members48,430 | | 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: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | According to books, 55 was 12 volt, but every one I have ever seen is still 6 volt except for some of the larger trucks. And yes the factory put resistors on the first 12 volt gauges. I have a 58-59 parts truck. I can look at the back of the gauges. But the ones with the resistors will work for 12 volts. | | |
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