Hi 440. I am only assuming that it did. I have the switch on the dash and the wiring going down to the back. However a lot of gear was missing when I purchased this car. I contacted Roger who runs the "GTX registry" website and he has the defogger in two of his cars. That's where I got the part numbers from. I didn't have a build sheet with the car so I've just been going on old wiring and such from when I pulled everything apart.Just curious did your car come with the rear defogger?
Personally I have never seen one in a GTX.
Do your have the fender tag Monroe?