A dimmer switch is a variable resistor-like we find with a headlight switch or radio volume control. We vary current flow to control brightness, motor speed, and a host of other things.

Now Painless offers a similar kit for the rest of us who need wiring help. The Universal Trail Rocker kit uses the same control box and wiring, but doesn’t come with a switch panel.

Ensure max electric fuel pump output and safety with a relay for no voltage drop, plus an oil pressure switch that won’t let the pump run if the engine loses oil pressure.