While I wait for my sheetmetal "gap" pieces to be fabbed up for my fenders I have begun to remove my trailers old wiring. I am still amazed at how well built these trailers are. The tail light assembly have these internal rubber ball mounts for each bulb. The balls are hollow and absorb vibrations and impacts and protects the bulbs elements from these forces. All of the wire connections are in case in 1" diameter rubber sleeves. The male end is about 1/2" rubber piecethat encases the metal connector. When I pulled these apart they look brand new inside! Last night I looked up LED replacement bulbs. $45! WHAT A RIP OFF! I will go with the standard 12V 1165 style bulbs. OK back to work.