Random Wire Hanging

[Spur08]

I have a random red wire hanging inside my driver side tire well. Does anyone know what it goes to? Vehicle is '13 Tahoe LT, bought used in '13. It does not have any aftermarket upgrades.

Talk to me like I know nothing about cars
TIA

 

[areaandrew]

There should be 2 random wires hanging in that location, you have 2 open studs in your fuse box under the hood, if you want to add a trailer brake you connect those 2 red wires to the available post in the fuse box and it sends power to the available wiring that is taped off under your dash. Basicly its a trailer brake wiring kit that is just not hooked up to power yet.