This Combo Plug plugs into "old school" cigarette lighter outlets and converts to Hella Female (Hella Male, as shown in photo, is not included).
This product does not work with newer 12V power sockets. If you are trying to plug this in to a newer vehicle or an alternative power supply like Goal Zero, this is not the correct solution. For that purpose, please checkout one of the 12V power cords by Powerwerks, available here.