The fog light relay switch is one of the items to look for to identify a true GT/CS car. Cars with the GT option had fog lights and had the relay switch, but the fog light relay was one of the many items that owners did not know to duplicate to fool someone into a clone car.
This goes way back before the Marti report was available. If you were looking at a coupe with the GT/CS stuff, but no fog light relay switch, then you might want to dig deeper.....
Now all you do is order the Marti report. Back in the day you had to do investigative work. Kinda funny how many people do not remember the old days of trying to authenticate these cars..
My car has the relay switch in the proper location, but the Gold Nugget Special did not come with fog lights. Further reference to the murky history of my car.... My car had Marchal's, the fog light switch, the fog light wiring, the correct rear wire harness, and all the other GT/CS stuff....
Rob