OK, I have an 86' 240 wagon and the rear window defrost doesn't work. The switch comes on and lights up. I even have 12 volts at the terminal on the drivers side of the rear window. However, the terminal on the passenger side of the rear window has a wire hanging off of it with a round terminal at the end of it.......WHERE does this wire go. I cannot find any place to hook this up to. At one time I grounded it to a bolt, but that did nothing. The terminal itself has 12 volts to it when the switch is on. The service manual doesn't show any detail for this. I am very confused. Thanks for any help!!!!