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Click on image for the lowdown. 
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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!
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 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | look at the diagram I linked, upper right shows 2 wires to the tail - if the wires you show are under the cab, the 3rd wire will be to the gas tank sending unit - still leaves you with using an ohmmeter to track which is what, or stripping that rotten cloth off to visually determine which is which - and the wire showing voltage will be for the circuit you have live, headlight switch on, brake light switch closed, power to gas gauge ..... usually the battery should be disconnected when wiring is in that condition!!
Bill | | |
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