Hello. I have a custom skin on back with 12 inch led brake lights. I had these wired up before using the factory harness and the light and brake light worked. Now I just seem to be getting light, and not a brighter light when I brake. The wires coming out of LED light are black, red, white. Any thoughts? thanks!

 

check your connections. use a test light to make sure you are getting power from your original truck harness for the brake lights. if you are getting power for brake lights, connections are good, and nothing is going on at the tail lights, its the tail light circuitry that has gone bad...