The part Im talking about is under the dash, right above the drivers side kick panel, out towards the fuse box. The plug that goes into this little black box that is about 3 inches wide and 3 inches long, looks just like the gray plug that plugs into the back of the radio. Bout a 1/4 inch thin but a wide plug. This particular plug has 6 wires in it and it comes off of the main harness about 4 inches out past the firewall. The black box part is surrounded by like a yellowish/white-ish plastic guard piece. Anyone know what this part is??