How to Fix Running Lights on a RV

RVs usually have intermittent running lights, something that you should know how to deal with. Intermittent running lights usually result from two primary factors – corrosion and road vibrations. You should, therefore, find it relatively easy to fix the problem.

The running lights will fail when the electrical contacts get corroded. Road vibrations, on the other hand, tend to make the contacts become loose.

Develop the habit of carrying some spare fuses and bulbs that you can easily use to most problems. Whenever the running lights fail, check the fuses before you take any other step. The most likely problem is a blown fuse if all the bulbs do not function.

Remove the relevant fuse and check it closely to determine whether its filament is broken, in which case you need to replace it. However, a visual examination is not always enough to determine a faulty fuse. It is, therefore, a good idea to replace the fuse with one of the same ratings to confirm that it is not the cause of the problem.

Another thing that may lead to failure of the whole circuit is poor electrical contact, which usually results from corrosion. Spray some electrical contact cleaner to remove the corrosion. Cover both the socket and plug with sturdy plastic when they are disconnected to prevent the problem.

Corrosion may also take place at the bulb connections, where you should also clean once you have determined that the problem is not a burned-out bulb. Use some silicone sealant to cover the edges of the lens so that water does not seep in, which is what leads to corrosion.

When the running lights flicker when you tap on them, then the most likely problem is poor ground. Trailers with non-metallic mounting surfaces usually use two wires. Remove the lens to determine the type of ground used. If there is only one wire, then grounding passes to the aluminum skin via the mounting screws. Tightening the screws normally solves the problem.

Trace the ground wire if two wires are used. It will usually be attached to the trailer’s chassis. Check whether it is not attached securely or broken.