Brake Lamp: Description and Operation
Voltage is applied at all times through the STOP HAZ Fuse to the Brake Switch. When the brake pedal is depressed, voltage is applied to the High Level Stop Light and also to the Stop Lights through the Turn-Hazard Switch Assembly.
If the Hazard Switch is "ON," the Stop Lights will continue to flash when the brake is applied. The High Level Stop Light will light steadily, however, since it is fed directly from the Brake Switch.