
When I turn cargo switch on first click light comes on when I put it in reverse. So I ran bumper lights to that with relay and ran to battery . now both lights in bumper come and cargo light when in reverse .There is no backup light plug/wiring harness on XD1500. Went through the wiring schematics and checked with dealer. Not there. It is still available on the XP1000. They actually have a plug and play wiring harness that is capped off under the box at the rear of the machine. I always connect it through a simple relay so I don't draw to much current from the source. It was a concern on my 2020 machine so just always a little cautious.
There is a junction in the right rear corner of the bed underneath that you can put a premade plug-in for trailer lighting. That’s the only one I’m aware of. I don’t know if this makes sense but follow the wiring back from each tail lamp.2026 1500 crew xd .. where is the reverse light plug and play located at?????