For some reason, my 1991 T/A did not come with rear defrost from the factory....additionally, I've seen a lot of other cars (mostly GTAs and T/A's)from the same model year that did not have rear defrost either. I find this a bit odd considering how many no-option base model camaros and firebirds I've seen in the junkyards that had the option, mostly 85-89 models. At any rate, I've got the rear defrost switch, the relay that goes behind the dash, and now finally a 1990 Camaro has shown up at my local pullapart, hopefully with a rear defrost hatch....is there anything else I'd need to have a functioning defroster?

 

just make sure the wires are behind the plastics and you should be good to go.

my formula doesnt have it, but i dont want it and its not driven in the fall/winter so its not a issue...