When the headlamp switch is placed in the PARK or ON position, the dash integration module (DIM) park lamp switch input is grounded.

The dash integration module (DIM) supplies battery positive voltage (B+) to the PRK LP relay coil. When the headlamps or park lamps need to be on or when the ignition switch is in the ON position. Battery positive voltage (B+) is supplied at all times to the PRK LP relay switch. When the park lamps are to be active, the DIM grounds the PRK LP relay coil. The coil is energized, closing the switch contacts. Battery positive voltage (B+) is supplied to the rear fuse block RH PARK LP Fuse, LH PARK LP Fuse, and DIMR Fuse. The LH PARK LP Fuse supplies battery positive voltage (B+) to the LH park lamps. The LH PARK LP Fuse supplies battery positive voltage (B+) to the LH park lamps. The LH and RH park lamps are permanently grounded, so all park lamps have power and ground, and then light. The DIMR Fuse supplies battery positive voltage (B+) to the DIM park lamp input for interior lamps dimming, the license lamps, the underhood lamp, and the cornering lamps. The license lamps are permanently grounded, so both license lamps have power and ground, and then light.

Battery positive voltage (B+) is supplied at all times to the turn signal/hazard flasher module from the rear fuse block TSIG/HAZ Fuse. The turn signal/hazard flasher module is permanently ground. Battery positive voltage (B+) is supplied with the ignition switch in the ON or START position to the turn signal switch in the steering column from the rear fuse block IGN 1 Fuse.

When the turn signal switch is placed in the position to indicate a LH turn, battery positive voltage (B+) is supplied to the turn signal/hazard flasher module left turn input . In response to this input, the turn signal/hazard flasher module supplies battery positive voltage (B+) in an on and off flashing pattern to the LH front turn lamp and the instrument cluster (IPC) LH turn input and to the LH rear turn lamp. The LH turn lamps are permanently grounded, so the LH turn lamps light when they have power and ground and turn off while power is removed. The instrument cluster (IPC) will also light the LH turn indicator.

When the turn signal switch is placed in the position to indicate a RH turn, battery positive voltage (B+) is supplied to the turn signal/hazard flasher module right turn input. In response to this input, the turn signal/hazard flasher module supplies battery positive voltage (B+) in an on and off flashing pattern to the RH front turn lamps and the instrument cluster (IPC) RH turn input and to the rear turn lamp. The RH turn lamps are permanently grounded, so the RH turn lamps light when they have power and ground and turn off while power is removed. The instrument cluster (IPC) will also light the RH turn indicator.

When the hazard switch is pressed, the switch contacts close and the turn signal/hazard flasher module Hazard Input is grounded. In response to this input, the turn signal/hazard flasher module supplies battery positive voltage (B+) in an on and off flashing pattern to all turn lamps. All turn lamps and both turn indicators then light as described above.

Battery positive voltage (B+) is supplied at all times to the stoplamp/auto trans shift lock control switch from the rear fuse block STOP LP Fuse. When the brake pedal is pressed, the stoplamp/auto trans shift lock control switch contacts close and battery positive voltage (B+) is supplied to the center high mounted stop lamp (CHMSL) and the turn signal/hazard flasher module brake input. In response to this input the turn signal hazard/flasher module supplies battery voltage to the rear stop/turn lamps. The center high mounted stoplamp (CHMSL), RH tail/stop/turn lamp, and LH tail/stop/turn lamp are permanently ground. The stoplamps light when they receive both power and ground.

When the ignition switch is in the ON position, battery positive voltage (B+) is supplied to the turn signal switch . When the turn signal switch is placed in the position to indicate a LH turn, battery positive voltage (B+) is supplied to the LH cornering lamp. When the turn signal switch is placed in the position to indicate a RH turn, battery positive voltage (B+) is supplied to the RH cornering lamp. The cornering lamps are permanently grounded, so the cornering lamps light when they receive both power and ground.

When the park lamps are on, battery positive voltage (B+) is supplied to the underhood lamp . The underhood lamp is permanently grounded. When the hood is opened, the switch in the underhood lamp closes and supplies ground to the bulb in the underhood lamp. The underhood lamp lights when it receives both power and ground.