If I remember right, the switch costs about $12 at honda. I picked one up, and have it so It controls the power to my inverter/ps2. I played with the damn swith with a multimeter for about 2 hours figuring out which terminals were for what. I covered up the little foglight symbol, and didnt use the dimmer terminals. Just a hot wire, ground, and accessory. the other 2 are for the dimmer.