The reason for the most of us going to LED lights was to save trailer battery power when camping off the power grid.
The MARKER lights are all powered by the truck start battery system so there is no real power saving for the camping part.
The LED lights probably put off the best lights if you buy the right one. I notice almost all big truck lighting are LEDs now...
Regulated type LEDs will emit RFI signals that may interfere with your home entertainment items... I know my Ham Radio picks up noise pretty good when I pull up behind a tractor trailer truck which I suspect is coming from their LED lights...
The only way the LED lights start getting dim is burning out some of the individual LED strip lights inside. This is probably due to cheap LED lights are being used or not rated high enough for the varying DC voltages associated with the truck charging system. Regulated LED assemblies that operate from 7-20VDC would most likely solve that problem. High Vibrations should not be a problem with LED fixtures. Poor weather seal however is probably a big problem.
Just some of my thoughts here
Roy Ken
