MERIT (HELLA ) DIN 4165 Inline Female Socket Power Connector DIN 4165 MERIT (HELLA ) Inline Female Socket DC Power Connector. Inline socket for making your own extension leads, adapters etc. With protective cap Premium build socket made with brass fittings & contacts & high impact plastic. High temperature plastics. Handles 5V ~ 30V DC up to 18A. Conforms to DIN 4165 standard Cautions: This adapter cable is just a power connector adapter, and it does not have any electric circuits inside to control electric voltage/current/polarity. Merit is fast becoming a new standard for automotive mobile accessories. It is also known as 'BMW Accessory Plug' and 'Hella Plug' Found on many cars, motorbikes, caravans, 4WDs, boats and trucks