I just upload some pictures of the conversion process of my '13 370Z reflector to a fog light, without the need to buy a new light and/or JDM switch.
Thanks to carlitos_370z to provide me the contact info of his electromechanic. I hope it helps clarify any doubts and help people save some money using the actual reflector on '13 370Z.
Thanks again carlitos_370z!!!!!
Link to photo album:
Nissan 370Z Forum - RafPR's Album: Rear fog light