If the vehicle has this feature, a fiberglass cap, it will include a white interior illumination lamp. The lamp is located top center of the rear panel, above the cap rear door. Switches located in the cab and cargo area of the vehicle control the lamp. The lamp will not function when the vehicle is in blackout mode.

The interior 3-way switch (A) is located on the accessory panel.

The bed mounted 3-way switch (A) is located in the left rear of the cargo area.

The lamp mounted override switch (A) is located on the lamp. If the master switch is turned OFF the following will occur: