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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 2019 Posts: 2,242 Herder of Cats, Goats, and Sheep (moderator) | | Herder of Cats, Goats, and Sheep (moderator) Joined: Jan 2019 Posts: 2,242 | The output side of the brake light switch connects to pin 17A (grey) of the turn signal (column) harness.
Power for the brake lights passes through the turn signal switch so it can make them flash.
What kind of turn signal switch do you have? I suspect there is a misalignment between what wiring it is expecting and what the harness is set up for. | | |
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