This uses a very basic circuit and the turn signals are not part of it. It powers from fuse #13 20amp and then goes through the brake light switch so you just need to do some testing at the brake light switch and see if you have power coming in all the time and going back out when the brake is applied.
This guide will help you test the circuit
https://www.2carpros.com/articles/how-to-check-wiring
See the wiring diagram below
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Saturday, February 27th, 2021 AT 1:54 PM