LED's for marker lights

Replacing my top markers with replacement LED units from Etrailer. Going to put liberal amounts of flexible sealant around the base of the unit as well as the small hole where wires go through the mounting plate, then going to use clear sealant around the lens cover just for added measure. Seems most of the water penetration happens when the lens crack from debris or weathering and water is pushed through this wiring hole. One could also use a cut-to-fit piece of EternalBond tape around the large opening for the wire leading into the RV and provide a small hole just big enough for the small wires to pass thru. This would provide an extra barrier to stop the majority of major water intrusion. Again, there is no permanent solution.