Thanks Robert. It sounds simple, but I bought a second one to make it wasnt the light bad. It comes 3 wires-1 groung, 1 wire to running lights, and 1 wire to brake light. The running light(white leds) works with light switch, but red leds or white leds will not work with brake pedal pushed. Tested on truck just fine, and with extra battery I had. (I can touch ground to neg posts, wire for running light white leds good, and touch red also at same time and go to red leds for brakes as they are suppose to). I just tried again, going crazy. They would be nice if they worked. Right now running wire for red leds to running lights. looks ok. Thanks dave.