A headlight bulb contains two elements for the separate settings. Perform a pre-departure inspection on the high beam and the low beam functions. For safety purposes, leave the headlights on while driving. A burned out bulb may result in only one operational headlight. Keep headlight spare bulbs on hand for quick repairs. While changing bulbs take the time to carefully examine the socket for signs of corrosion. Loose wiring can cause the headlights to operate intermittently, or not at all. Call Technical Support for assistance in locating the headlight wires for your specific model unit.

Protect the headlights by driving slowly on gravel roadways, and by keeping a distance from vehicles traveling ahead. If you protect the lens using a clear plastic cover, be sure that coating meets traffic ordinances. You can check the position of the headlight beam by studying the reflection on a closed garage door. Adjustments can be up and down or side-to-side using a machine designed to adjust headlight beams that are often found at service repair shops, or with the use of a special hand tool available through auto supply outlets.

Bay lights are powered using 12 Volt DC, and operate through a switch at the entry door to control all bay lights, or an independent switch on the bay light housing itself. To troubleshoot a malfunctioning bay light, start by removing the plastic cover and checking the bulb for fit. Road vibration can loosen the bulb and prevent contact. A little white grease around the metal part of the bulb can help promote better contact, or it may be helpful to squeeze the bulb socket to make the bulb fit snug.

Top and side clearance lights require routine maintenance. The bulbs inside clearance lights (peanut bulbs) contain two small wires. Road vibration can loosen the peanut bulbs. To check for good contact, remove the peanut bulb and slightly move the small wires to improve connection. Heavy rain and temperate climate changes can corrode clearance lights over time. Occasionally inspect the lens by removing the cap using a flat bladed screwdriver. If you detect any signs of corrosion, install a new light base and cover. Attempting to clean away corrosion will usually not completely eliminate the problem.

On most model motorhomes the taillights can be accessed through the engine compartment. Generally the taillight harness is located behind the rear cap. When a taillight bulb needs to be replaced, grasp the socket and twist. The bulb and the harness can be removed. Use caution to prevent the wires from becoming too tight and pulling apart. Leave a little slack.

Perform a light check after dark. Engage the headlights, bay lights and clearance lights and walk around the exterior of the RV. Remember to check the top and side marker clearance lights. If you discover that an exterior light is not working, fix the light during daylight hours.