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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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| | | | Joined: Apr 2015 Posts: 113 Shop Shark | | Shop Shark Joined: Apr 2015 Posts: 113 | I have 2 pairs of wires running to the back. One pair is tail lights and brakes. The other pair is right and left turn lights.
The lights I have 2 wires. If I put both the turn signal wire and the brake wire to the bright bulb the brake light overides the turn signal and it does not flash. I have the factory 3 wire turn signal switch that connects under the dash to a 3 wire plug. I will look for a wiring diagram. I don't think the shop manual has it but I will check it out.
1959 Chevy 8500 - Spartan 80
366 BBC
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