Horns Circuit Description. Pontiac Sun Runner - 4WD (Canada) 1998

For 1990-2009 cars

Battery voltage is continually applied to the horn relay through the stop fuse. The horn relay grounds when either the left or the right horn switch is pressed. This energizes the horn relay, causing the relay contacts to close, applying voltage to the horn. Because the horn is permanently grounded at G105, the horn will continue to sound for as long as the left or the right horn switch is held down.