yes. the headlight just tells the bcm what to turn on. thats why your lights flash when you hit unlock on the clicker. i highly doubt it would be the switch itself. id probe all the external light'* power wires and check for a ground on the positive wires. if you get a hit, look in areas open to the elements on that particular lights harness.
also, try unplugging the harness going to the trunk lid. with those wires moving every time you open the trunk you could have busted a wire in that harness. happens alot on the W bodies.
6000k headlights, LED license plate fog lights, tinted taillights and to top it all off, 2 12" air horns!
the gf:'00impy 3.8, every option. COTM July 2013