You should still disconnect the ABS system and try to track down what it causing the current drain. Who knows, it could be a problem with the voltage regulator, but I'd be really surprised if you had two bad alternators with the same failure mode unless there is a very obvious wiring problem.


Ok, I think I see what is going on now. You're disconnecting the big white wire on the underhood fuse box, which is the same wire attached to the output lug on the alternator. That's why you're seeing a different voltage with it connected to the fuse block versus not connected. The regulator, with no load on it, puts out a higher voltage than with a load applied obviously.