I purchased an 88 Spider Quad last year. With 35,000 miles I would have expected some maintenance issues and found one with the radio. Apparently there were some electrical wiring changes for the factory radio installed, which is still used. According to maintenance records, when the car was originally purchased in 1988, a mechanic was chasing down a battery drain problem. Thinking the source was the radio and antenna, he ran constant power to the radio and disconnected the power lead behind the radio that serves the power antenna. The black/red wire behind the radio that goes to the antenna has been taped. Now I am not sure where the power antenna lead behind the radio is powered from. There is a connector that has a vacant space but no lead entering on either side of the connector. If anyone has a photo or radio wiring diagram that may help solve my problem it would be appreciated. I have had no luck searching around. Thanks for your help.