Dimmer Range Control

The dimmer range control is the first dial to the right of the headlight switch. Its function is to adjust system sensitivity to surrounding light. Rotating the control's thumbwheel upward (or knob clockwise) toward maximum ON position increases sensitivity, and headlights dim when approaching vehicles are at a greater distance.

Rotating the dimmer range control thumbwheel downward (or knob counterclockwise) decreases sensitivity, allowing approaching vehicles to come nearer before headlights dim. Moving thumbwheel fully downward (or knob fully counterclockwise) to OFF position permits manual operation of headlight beam with column dimmer switch.