I just bought a 97 Wrangler TJ with a hard top on it. Under my radio is a panel with one red switch in the center and a blank on either side. The switch does not seem to do anything and there is no other switch for my rear defroster and no switch for my rear wiper or wiper fluid. The front windshield wiper and fluid works off the handle on the right side of my steering column but there is nothing to indicate controls for the rear wiper or wiper fluid. Can someone lead me in the right direction on where the controls are and how to get my rear wiper and wiper fluid working?