Tail Light Wiring

[Sundance]

I'm going to remove the converter thing in my U-Haul and have seperate Tail Lights and running lights and stand alone 120v power.
I'd like to replace the marker lights with LED's but it seems that most LED marker lights only have one wire. I assume they use the frame for grounding. Obviously that won't work with the fiberglass body.
Any ideas on grounding the lights?
Jim

[Thomas G.]

UHaul used a single wire light for clearance lights and soldered a ground to the mounting rivet plate.

[Darwin Maring]

If you R replacing the lights then the ones that R already there will have the 2 connections you will need. Test your LEDs B 4 you install to discover where the return wire connects 2 it.