This adapter plug can be used to connect your Optimate charger easily to a BMW power socket OR a standard 12v cigarette lighter.
On BMW's CANbus models, the battery cannot be charged from the accessories socket. On these models you must add a 2nd socket that is connected directly to the battery.
- Fits "BMW" outlet and Cig lighter sockets
- 8A fuse inside
- Exposed terminal of SAE socket is +12v