Alternator contacts

Showing major parts of the alternator

On the B+ contact can be found the heavy cable to the battery, usually covered in RED insulation. Often there is also a heavy cable to the starter motor at this point.

The D+ cable, in the Boxer covered with a BLUE insulation, is the cable which is used for the Fridge voltage control when the vehicle is running.

The W contact is used for Tachometer Meter functions.