Two power feeds connect to the switch, but they are fed separately and differently for a reason.
- Terminal "B1", is fed by the Black/White* wire from the main power splice, which is unfused. When switched on to the headlamp position, the internal contacts connect "B1" to terminal "H", then to the Light Green wire to the dimmer switch, which feeds the headlights. The headlight circuit is protected by the internal, auto-reset, breaker in the headlight switch itself.
- Terminal "B2", is fed by the Pink wire from the fuse box, and the "Tail Lamps" fuse. When switched on to the headlamp or the parking lights position, the different internal contacts connect "B2" to terminal "R", then to the Black wire to panel dimmer switch, which feeds the dash lights, and to the rear body connector, in the kick panel, which feeds the tail lights, and also the parking lights and side marker lights (Black/Yellow*) which tap from the circuit. The tail light, and related lights, circuit is protected by the "Tail Lamps" fuse.
The two circuits are independent and separate electrically, but controlled mechanically by the same toggle on the dash.