I've got an old analog car phone antenna on the back window of my 190D. I bought the car used, so I don't know how the car phone was all installed. I took all the stuff out except the wire harness in the trunk and the antenna from the rear window. I really wouldn't have a problem with the antenna, but it is shorting out my top two defroster elements. The phone is an old uniden. Does anyone know how to get this antenna off? Thanks.