i just piced up an 84 chevy and had a shop install the brake controler and the wireing for the trailer lights, so the guy from the shop called and said that every time he turned on the lights in set the controler off which would lock up the trailer brakes what could be cousing this and how can i fix it? NEED HELP
he's got the wire which attaches to your brake pedal hooked into your running lights, or you have a bad lightbulb. lightbulb less likely.
