My car is a '97 with AM/FM/CD and I am wanting to get the converter cable that converts the 9 pin data port on the back to RCA inputs. The site that sells the cable says that it only works on Camaros with Tape. Mine is prewired for the CD Changer with all the wiring, so I believe it should work but the cable costs $69.99. so I don't won't to order it when it doesn't work. Does anybody use this cable?