The park lamps, side marker lamps, and tail lamps are supplied power from 2 different circuits.

When the headlamp switch is in PARK, the park lamps input to the lamp control module (LCM) is grounded. The LCM then applies battery positive voltage (B+) through the IP fuse block LP PK L fuse and the LP PK R fuse to the following lamps:

Battery positive voltage (B+) is applied at all times from the underhood fuse block STOP fuse to the stoplamp/auto trans shift lock switch. When you depress the brake pedal, battery positive voltage (B+) is supplied through the stoplamp/auto trans shift lock switch and the rear fuse block to the high mount stop lamp and tail/stop lamps.

When the ignition switch is in RUN and the turn signal/hazard switch is in a turn position, battery positive voltage (B+) is applied from the underhood fuse block T/SIG fuse through the turn signal/hazard switch to the respective turn signal flasher input. The turn signal flasher receives battery positive voltage (B+) at all times from the underhood fuse block HZDT/SG fuse. The turn signal flasher supplies battery positive voltage (B+), in an intermittent on and off pattern, to the respective front turn signal lamps and side marker lamps through the underhood fuse block. The turn signal flasher also supplies battery positive voltage (B+) in an intermittent on and off pattern to the respective rear turn signal lamps and rear side marker lamps through the rear fuse block. The respective turn signal indicator on the instrument cluster will flash continuously while the turn signal/hazard switch is in the turn position. Battery positive voltage (B+) is supplied to the left turn lamps and via to the right turn lamps.

The front side marker lamps are wired with power circuits on both sides. When the park lamps are on and a turn is indicated, these side marker lamps flash on and off opposite of the other park/turn lamps. When the turn signal flasher supplies battery positive voltage (B+) to the front side marker lamps, they turn off because the lamp control module (LCM) also supplies battery positive voltage (B+) to the front side marker lamps and there is no net voltage across the lamps. When the turn signal flasher removes battery positive voltage (B+) from the front side marker lamps, they become grounded on that side and light due to the battery positive voltage (B+) supplied by the LCM.

With the turn signal/hazard switch in the HAZARD position, the hazard signal input of the turn signal flasher is grounded. The turn signal flasher supplies battery positive voltage (B+) in an intermittent on and off pattern to all turn signal and side marker lamps. Both turn signal indicators flash on and off continuously while the turn signal/hazard switch is in the HAZARD position.

When the ignition switch is in RUN and the turn signal/hazard switch is in a turn position, battery positive voltage (B+) is applied from the underhood fuse block T/SIG fuse through the turn signal/hazard switch to the respective cornering lamp. Battery positive voltage (B+) is supplied to the left cornering lamp via the left turn signal input circuit and is permanently grounded. Battery positive voltage (B+) is supplied to the right cornering lamp via the right turn signal input circuit and is permanently grounded. When the turn signal/hazard switch is in a turn position, the corresponding lamp illuminates.