As title. I fitted a lit shift knob, official BMW M sport 5 speed unit, but when testing the unit prior to putting it all back together, the knob wouldn't light. Tested with lights on, off, with engine on, all sorts. Nothing. So got the multimeter out, and the connector was only supplying 5v, but all the time, regardless of ignition, lights, anything. Anyone got any tips on why this might only be pushing 7v too few and all the time?