Alpina Alternator

[TopCat]

Herman's Amp gauge is showing red when travelling with lights on and when indicators are used Amp gauge moves!

So it looks like a new Alternator is required

thing is what type and is it the same for a BB M30 as a SB M20 engine?

any ideas?

[Aldo]

I would just rebuild it. New bearings, brushes, regulator and perhaps even the slip ring.

[Jeroen]

Dunno if Alpina used special parts, can't imagine why. But yup, it may even be that just a fresh combo of brushes and regulator (available as one kit) is more than enough.