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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!
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| | | | Joined: Jan 2011 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2011 Posts: 68 | can anyone please send me a simple wiring diagram/understanding of the wiring (2 wires) for a 51' stock gas tank sending unit? my truck had no wires when i got and the new unit came without instructions. seems pretty simple, i just can't find it any where online and i don't want to hook it up wrong. thanks -DVZ | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | 51 truck wiring diagram, print it out, should also be in the shop manual, an invaluable asset for vintage truck owners Bill | | | | | Joined: Jan 2011 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2011 Posts: 68 | bill, thanks so much. i know i need to get a manual. -DVZ | | | | | Joined: Jan 2011 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2011 Posts: 68 | i hooked up the unit the way the diagram shows and am still getting nothing on the needle. are these units 0 ohms empty and 30 full? i will test tomorrow. also, does the guage have to be grounded or does it ground through the housing? there are only 2 posts and most guages i've seen by re-searching this have 3 (ignition, ground, sender). thanks-DVZ | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | you are correct. 30 ohm full 0 ohm empty It grounds to the housing Credit to Jimmi V A few months ago I could not get my new 12v replacement gas gauge working. After reading Jimmi V's post I cleaned paint from the housing, I bench tested it and it works. | | |
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