This is remix on a Cigarette Lighter Mount that I found from the user Jase3D. His model was for a Miata and as he suspected, it also works for RX7 FC. The only slight modification I added to it was a small little pin that my OEM part had that prevents the ring from rotating and keeps it in the proper orientation around the frame. Not sure if the Miata needs this little pin or not - other than that, it's basically the same file.