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Click on image for the lowdown. 
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Global Mod,
Mod | | | Forums66 Topics128,094 Posts1,056,465 Members48,443 | | 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: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | GMC used electric temp gauges through some years. They will not work with the Runtz resistor. I havent tried it without the resistor yet and the 6 volt sending units are nearly impossible to find to accurately match the GMC gauges.
That just leaves one needed for the gas gauge.
Amps are amps regardless of voltage. It could be 1 volt or 100 and it wouldn't affect the amperage.
Jeff | | |
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