For anyone interested, I just had my J Spec Rear Fog Light installed in my new roadster which presented a new problem as compared to my coupe...in my coupe I used a "third" heated seat rocker switch in the middle/unused center console location (
Nissan 370Z Forum - Robert_Nash's Album: J-Spec Functional Rear Fog Light - Picture ) but that location isn't available in the roadster because that is where the control for the convertible top is located.
So, my mechanic and I solved this problem by placing a second "hazard light" switch in the upper right of the transmission shift lever (where the synchro-revmatch on/off switch is located in a manual with the feature). In an 7AT (as I have) or a manual without rev match that upper right location is simply a "blank/empty" location. Of course, that position is not available if you have a manual with the rev matching option but it works for me and it looks quite "factory" and unobtrusive.
I understand why Nissan doesn't make the rear fog functional for the U.S. but I certainly wish they would...I've found it very useful in fog and low visibility conditions when in my coupe plus a real light/lens looks a hell of a lot better than the blacked out dummy unit our U.S. spec cars are shipped with.