Description

Dim-Dip Control Unit governs the dim-dip headlamp function within the exterior lighting circuit.

The dim-dip system runs the headlamps at a reduced intensity when the sidelights are selected with the ignition switched on, instead of permitting the vehicle to be driven on sidelights alone. Working in conjunction with a series ballast resistor, the control unit switches the headlamp feed to the reduced-power dim-dip level and manages the transition to full dipped beam.

It is fitted to vehicles built to the UK dim-dip lighting specification.