To access the wires for the third brake light, go to the back of the car and remove the trim cover that is around the passenger brake light. BE CAREFUL THE PLASTIC IS VERY SENSITIVE. Once the cover is removed the two wire harness is in the gap between the brake light and the bumper cover on the left side near the center of the trunk.
There are 3 types of Brake Plus modules: Regular, Black Stripe, Red Stripe
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Are you having issues with installation? Check out our troubleshooting guide for common errors associated with the installation of Brake Plus.