See also:

Lamp assembly condensation
Exterior lamps are vented to accommodate normal changes in pressure. Condensation can be a natural by-product of this design. When moist air enters the lamp assembly through the vents, there is a ...

Replacing exterior bulbs
Check the operation of all the bulbs frequently. ...

Trailer lamps
Trailer lamps are required on most towed vehicles. Make sure all running lights, brake lights, turn signals and hazard lights are working. Do not connect trailer lamps directly to your vehicle’s t ...