Purple & White wires in rear?

[Lar_s]

Just got home and noticed a wound up coil of 2 wires purple and white, not hooked to anything, hanging down inside the rear bumper.

I checked for continuity and 12 volts with the truck hooked up... nuttin.

Anyone have any idea what these were supposed to be for?

2015 Dynamax Trilogy, 36 RL

Must be wound up for something... wondered if this type of wire could be for the camera... it said it was "wired" for a camera... can't seem to find those.

Can't find similar wires in front other than hooked to the hydraulic system for the jacks.
The sheet I have said purple was for pancake lights...

Color me confused.

Thx

[john_bet]

May be used to power the third stop light that's installed in a bed cap. My '99 was that way.