Just bought a 2001 Durango w 165,000 miles,on the drivers side connected to the fuse box under the hood is a red wire comming out of the fuse box and goiing into a 20amp fuse wiring harness that seems to be heading under the drivers side of the truck,inside is a blue wire too but the blue wire is cut and im wondering what this wire is? Anyone have a clue/ Im thinking maybe it goes to the trailer light hook up in the back....id apreciate any ideas....