Bro this is quite complicated, even this light is not where it should be, it should be a couple of inches towards the rear seats, if u want to go for this mod u must go to a professional, the guy who did it for me was from Dubai Autos Rwp and was everything except professional. The bugger was over confident and selected the wrong place for the light and for that he then had to cut a bracket on the roof. Secondly the wiring is quite simple (Not aval originally) only two wires req one for current and second for the ground