Exterior Light Controls

Headlight/Parking Light Switch

The headlight/parking light switch (Fig.) is a paddle switch located on the left-hand control panel above the cruise control switches. When the paddle is lowered, the parking lights illuminate (the front turn signals, the cab marker and identification lights, and the taillights). When the paddle is raised, the low-beam headlights illuminate, along with all the parking lights. To turn off all lights, return the paddle to the center position.

Note: Raise the paddle to illuminate the headlights, low beam.

Lower the paddle to illuminate the parking lights.

Fig. 1, Headlight/Parking Light Switch

When the headlights or parking lights are on, the panel lights also illuminate. An amber light in the switch backlights either the top icon (for headlights and parking lights) or the bottom icon (for parking lights only).

Panel Light Increase/Decrease Switch

When the panel lights are on, they can be either brightened or dimmed by using the INCR/DECR rocker switch just below the headlight switch (Fig.). To brighten the panel lights, press on the upper part of the rocker (at the INCR legend). To dim the panel lights, press on the lower part of the rocker (at the DECR legend).

Fig. 2, Panel Light Increase/Decrease Switch

When the panel lights are on, both legends are backlit in green.

Daytime Running Lights

Switching on the ignition and releasing the parking brakes automatically activates the daytime running lights, if equipped. The daytime running lights will operate until the parking brakes are applied or the headlights are turned on.

The daytime running lights illuminate at about two-thirds of normal power.

Marker Light Interrupt Switch

The marker light interrupt (MRKR INT) paddle switch temporarily flashes the marker lights and taillights (Fig.). With the vehicle lights on, raise the paddle to briefly turn off the marker lights and taillights. With the vehicle lights off, raise the paddle to briefly turn on the marker lights and taillights.

Raise the paddle to flash the marker lights.

Fig. 3, Marker Light Interrupt Switch

Turning off the vehicle lights automatically turns off the marker lights. When the panel lights are on, the marker light icon and MRKR INT legend are backlit in green.

Road Light Switch, Optional

The road light (ROAD LAMP) rocker switch operates the optional road lights, which are recessed into the front bumper or mounted on the lower edge of a cutout in the center of the front bumper.

The low beam headlights must be turned on before the road lights can be turned on. The road lights will not illuminate if the high beam headlights are already on, and switching from low beams to high beams will switch off the road lights.

To turn the road lights on, press on the upper part of the rocker (at the road light icon). See Fig.. To turn the road lights off, press on the lower part of the rocker (at the ROAD LAMP legend).

Fig. 4, Road Light Switch

When the road lights are on, the road light icon is backlit in amber. When the panel lights are on, the ROAD LAMP legend is backlit in green.

Utility Light Switch, Optional

The utility light switch operates one of the following lights or sets of lights:

• A single round utility light swivel-mounted in the center of the cab roof;

• Two round utility lights mounted in fixed positions on each side of the cab roof;

• Two flush-mounted utility lights mounted on the back of the cab, one on each side.

To turn the utility light(s) on, press in on the upper part of the utility light (UTLY LAMP) rocker switch (Fig.). To turn the utility light(s) off, press on the lower part of the rocker (at the UTLY LAMP legend).

Fig. 5, Utility Light Switch

When the utility lights are on, the diagonal light beam icon is backlit in red. When the panel lights are on, the UTLY LAMP legend is backlit in green.

Spotlight, Optional

The spotlight switch is located on the pivoting handle of the spotlight. There may be a single spotlight assembly mounted on the driver's door, or one on each door.