I have a 2000 T800 and on the outside of the truck, directly above the windshield on the driver side, is a little black ball. I can see what looks like the end of a black wire sticking out of it. I went on the inside of the truck and removed the radio to see if I could tell what it is and all I can tell is that it is something that was installed from the factory and there's a yellow and black wire running to it but I have no idea where the wire is coming from. Does anyone know what this is? The radio antenna is on the side of the truck and the CB antenna is on the mirror so I don't think it has anything to do with those but I'm not sure.