As you enjoy your Recreational Vehicle, the years and the miles start to show themselves in the outside lights. Running lights flicker, then fail completely; backup lights work sporadically; indicator and stop lights do not always give fair warning to other motorists.
ALWAYS START BY CHECKING THE BULBS.
If a bulb is blown, it will never work. But if it works on and off, and the filament inside is sound, suspect bad connections.
No need to rush over to a repair shop to get the connections repaired. This is a job you can do yourself, even with no electrical knowledge. Repair shops like to make it look like a very tough job when, in fact, it is one of the simplest tasks.
WARNING: if the shop starts talking about re-wiring your lights, jump in the cab and drive away as fast as you can. Either they do not know what they are talking about, and will wreck your vehicle, or they have marked you as an easy dupe and are about to take you for a lot of money. Here is why:
1. The wiring of the outside lights is very solidly done at the factory. The wires are stapled in place and will likely never need replacement. Almost all troubles with outboard RV lights...