Did your car come with the hardtop (RPO CC2) or did you just buy a top??
The hardtop will have a single black wire with a connector at each side. These wires are solder-connected to the defogger grid. There is a power lead in a plastic wire loom under the carpeting that is between the passenger side shoulder belt mount and the forward top frame swivel. This wire should be about 6" long in orange/black and it will also have a connector.
If the car came with the CC2 option from the factory, there will be a ground wire on the driver's side in the same relative location. Both of these wires are about 14 gauge thickness and there is only a single wire per side. If your car did not have the hardtop as a factory option, there will be no ground wire on the driver's side.
Cars that had the CC2 Hardtop option got a slightly different A/C control panel as there is a separate button to operate the hardtop defogger and heated mirrors. If your car has a button for heated mirrors (an outline of the curved mirror housing with wavy lines, that means that the hardtop defogger wire will not energize.
I don't know if simply switching the A/C control panel to the correct type will allow use of the hardtop defogger grid. The wire harness that attaches to the control panel may have a wire and pin in the connector for the hardtop but the only way to check would be to remove the control panel and verify that a wire is present. You would still have to have the proper control panel to get the defogger to operate.
