I have a 71 Charger. Bought a cool looking license frame with led lights. How it is soppose to work is white lights that are hooked up to running lights on car, and turns to red lights when brakes applied, and 1 wire to ground. It works fine when just hooked to a 12 v. battery. I also hooked it up to my 2003 truck and worked fine. It is a Pilot LW704-RW part number. Is there something different on how my car's brakes are wired maybe grounds as opposed to my truck?
THANKS Dave