Found some cut wires

[Andrew863]

Was changing my brake light switch to fix my issue with the cruise sometimes not coming on. I noticed a few wires just tucked up under the dash that are cut and going to nothing. The larger red wire is a constant hot with a full 12v going to it. Anyone have any idea at all what these use to go to? I bought the truck a couple weeks ago and don't have any issue with anything not working and can't find them in a wiring diagram. I really can't find a good diagram. Thanks for any help you can give me. 

[Andrew863]

Looks like i finally found a good wiring diagram. Those 5 wires are for a trailer brake. Looks like I need to unhook it from the fuse block so its not hot and just leave it taped up. Maybe this will help someone in the future. 

[dennismc]

That or just pull the fuse.

 

[greatmizzou]

Wish my truck had that harness set up!  Was a lot of headache getting it wired.  Ended up my middle roof brake light prevented the brake controller from working

[Andrew863]

Yea I was also suprised under the hood to find 5 wires balled up that are a 12v source incase I ever need to add anything. Nice to see GM thinking ahead.