checking exterior lights

JimK-NY wrote:
The exterior lights on the trailer operate off of the truck, not the trailer batteries. You need to plug in the truck to verify correct operation.

Do you have issues with burned out bulbs? What are you trying to check before a trip? Most RVs use LEDs and have for a great many years. A burned out LED bulb is rare. I have never had one fail even after years and years of use.

LEDs do in fact "burn out", I have just finished replacing all of my LED markers. After only 5 yrs of only being used two weeks each yr, one by one a LED marker light started to fail is some fashion. The ones I have had 6 LEDs each LED must have been in separate series strings as they tended to fail on half of the fixture and then would eventually fail completely. Have had to replace 3 Bargman tail lights also..

That was just on my TT, my 18ft flatbed trailer, in ten years of owning it from new one atil light and one marker gone, blank, no light, dead.. That trailer gets even less use than the TT..

My TT I was lucky that the lens were not sealed and I was able to relamp them with industrial outdoor sign LED modules that I added a resistor in series to reduce the brightness and increase the life of the LEDs.. Looks like these..



Yes, I did use Red and Yellow modules, they look clear until lit.

So, don't believe in the notion that LEDs will outlast your RV..