When the knob is all the way in it is the off position. One notch out is park lights, two notches out is low beams, and all the way out is high beams
Screw type terminals for easy connection of wires
Requires a 3/8" mounting hole to install the switch
This headlight switch has four positions. In is off, out one notch is park lights, out another notch is lows beams, and all the way out is high beams. Screw type terminals. 3/8" mounting hole. Works with both 6V and 12V systems. 910-80154 Instructions (PDF)