I bought the brp harness for a Baja designs light bar. It came with a "mode" switch that has on and off and momentary. I have the 10" hi power bank designs light bar. With switch in "on" position, the light bar is on high beams and while pressing momentary it turns on low beams but only stays low beams if you hold it down. Is there a 3 position switch I need or some kind of relay?