EZ Wiring Mini 20 Circuit Installation

The brake warning lamp switch doesn't have any wiring for it - I didn't need it in my car as I don't have the lamp anymore anyway (aftermarket dash). I don't really need it as I can tell when the brakes don't work right (obvious) and the knee knocker parking brake is pretty obvious too.

I believe the oil sending wire is just in there to connect on both ends, one to the sending unit, and the other to the gauge. I know I'm using it with my gauges sending unit. Even my sending unit is a to ground circuit (single wire connection) so it should work for you as well.