[Z U L8R]

3 possible things it could be. the first two have a 2% chance of being the problem.

1 the blue ecu relay is bad and not shutting off, swap the relay to check

2 the alternator has a bad diode in it and is not shutting off

but most likely the problem is in the wiring harness. the f3/m63 white dash plug by the ecu is not wired in correctly. 98% chance the problem is in the wiring. double check the wiring.

if you still can't fix it, i can repair your wiring fubarness.

easy...i'll even wire in the AC free of charge with the repair ^_^

Dave