Flash-To-Pass

The flash-to-pass switch is permanently grounded. When the headlamp dimmer switch is pulled toward driver, the flash-to-pass switch in the headlamp dimmer switch closes, and the DIM Flash-To-Pass input is grounded. In response to this input, the DIM supplies ground to the HDLP HI BM relay coil. The HDLP HI BM relay has battery positive voltage (B+) as described above. The relay is energized closing the switch contacts. The high beam headlamps are supplied battery positive voltage (B+) as described above. If the low beam headlamps are already on, they will remain on during flash-to-pass. The high beam headlamps will only remain on as long as the switch is held.