Battery draining overnight

So here is what I have done. I called Powermaster and talked to their tech guy Chris. He said to just run an 8 gauge wire directly from the alternator to the battery and not worry about the wire that I had going from the alt to the ammeter. I installed the 8 gauge wire, but instead of just capping off the ammeter wire, I connected both ends in the engine bay to the big post on the starter relay, and then connected both ends of the interior side to a single post on the ammeter. I hooked the battery up and everything seemed to work fine but I could see the battery was still draining with my multimeter. I disconnected the alternator and the battery stopped draining. I guess I’ll be sending it off for repairs now.

He is full of ****, and I'm suprised an outfit that is allegedly that tech savvy would say something like that. THERE IS ONLY TWO THINGS that would cause a battery drain and it is:

1...IF the alternator is NOT a "one wire," then the VR circuit is wired wrong, as it likely must have a switched source for the field/ VR circuit

2...Whether the alternator is "one wire" or not, the other possibility is a problem (DEFECT) in the alternator, IE a bad diode, etc