Anybody tried one of those inside the cab antennas? I got one from Classic Parts, but when I put in the radio cut in and out. It worked all right sitting still, bit when I wiggled the wire it cut in and out again. There's a wire running the length of the antenna cable that has a tag that says to connect it to the power antenna wire from the radio and a ground wire. Do these two need to be connected in order for it to work properly? Thanks.
