Hamslay
Registered user
I have a Keis heated vest that draws under 3A. Running it from the battery pack, it works fine, as it does using the Keis cigarette lighter 12V adapter in the car. However, removing the red cap on the cigarette lighter adapter to fit it to the BMW DIN connector, the vest isn't powering and the controller doesn't light up at all. I can't work out whether it's the socket or lighter adapter that's at fault.

