If you wire the running lights and brakes to the same wires on your LEDs, it'll work great until your lights are on and you hit the brakes, at which point you'll cause a short and either blow a fuse, melt a wire, or damage a switch! We sell a computer module that separates these circuits from each other and gives you a single output for the LED. Your running lights will operate at about 3/4 brightness, and the brakes will be full brightness, so people can tell when you hit the brakes when your lights are on. They also have another circuit open for turn signals, but you won't use it since you have tri-circuit lights.Member price on the TAC units is $39.95 for a
pair:http://
www.fbirides.com/product.asp?idno=8452
Hope that helps!
-Phil at FBI