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Mod | | | Forums66 Topics128,014 Posts1,055,330 Members48,419 | | 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!
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| | | | Joined: Jun 2007 Posts: 21 Apprentice | | Apprentice Joined: Jun 2007 Posts: 21 | What color is the temp gauge wire on the engine side of the fire wall, and what position is it.
mine is a 69 C-40.
I assume the 69 to 71 c-40 to c-70 would be the same position coming out and the same color.
can you tell that I have a wireing nightmare?
Thanks
Enjoy life, it's the longest thing you will ever do
| | | | | Joined: Jan 2007 Posts: 176 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2007 Posts: 176 | I think it is yellow, but I'll look at mine tomorow when I get home from work. mine has a 292 but usually the colors are the same. you're not alone most of the big trucks have been hacked up with different accessories and engines over the years. mine is the same way.
1970 C50 dump! saving orphans from the CRUSHER
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | FredM,
Although I couldn't find a C-40, all the rigs I did find used either a GREEN, or DARK GREEN colored wire from the sending unit.
Stuart | | | | | Joined: Jan 2007 Posts: 176 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2007 Posts: 176 | Yes, the temp sender wire is GREEN! I checked mine today. The wire to the coil is right next to it in the harness and it is yellow. I knew there was a yellow wire in that vacinity somewhere.
1970 C50 dump! saving orphans from the CRUSHER
| | | | | Joined: Mar 2006 Posts: 89 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 89 | Greeeen! Rewired mine yesterday
240,000 worker bees!
1960 Two ton Chevy
| | | | | Joined: Jun 2007 Posts: 21 Apprentice | | Apprentice Joined: Jun 2007 Posts: 21 | thanks,
I'll try to start looking for the hidden green wire now
Enjoy life, it's the longest thing you will ever do
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