I tried wiring in trailer lights by myself, I must have shorted out the circuit board inside because now I have nothing on that side, the driver side, which is the side I was wiring from, all the wires come down that side on inside of suv. Things have changed a lot, used to be able to just jumper the wires and u were good to go. Pass. Side is fine. Should have bought wiring harness, tightwad. Can I just buy the circuitboard?