AC blowing hot and found this.......

22 4runner AC started blowing hot so I checked the relay and it was good. My AC recharge manifold is being mailed to me from where I left it so can't check charge yet but in my perusal under the hood I found this random wiring pigtail lying loose on my passenger valve cover. I don't see anywhere to plug it in nor can I even confirm it's from my vehicle. I added a bumper, winch and lights a year ago but don't think this has anything to do with them. They look like they are sensors that were just glued onto something but for the life of me I don't see where. Thanks.