Operation CHARM: Car repair manuals for everyone.

Circuit Description

Battery positive voltage (B+) is supplied at all times to the horn relay coil and the horn relay switch. Pressing the horn switch grounds the control circuit of the horn relay. The horn relay supplies battery positive voltage (B+) to the horns when energized. The control circuit of the horn relay can also be grounded by the Dash Integration Module (DIM). The horns sound until the horn switch is released or the DIM de-energizes the horn relay.