EZ Wiring Mini 20 Circuit Installation

I went out and disconnected the 2 field wires and the voltage dropped to normal. So the alternator seems to be working then. I'm suspicious that's the ground is bad to the VR case since the voltage and ammterer fluctuate. I've got one wire from the VR case to the ECU case from ECU to a ground spot connected to - battery. When I measured the voltage drop at ECU and VR, the voltage dropped down from 0.1V to 0V on the ECU case. But when I measured at VR case the meter was at 0V from the begining as it never got any contact. Since the ECU is closer to the battery and the VR ground goes thru the ECU the VR should read at least 0.1V until it dropped like the ECU ground. But now it make sense and I should check that out. But if that doesn't solve the problem which VR should I buy? Found this VR and like the ground connection but dont now the quality.

http://viewitem.eim.ebay.se/SMPSTANDARD-VR125T-Voltage-Regulator/271241481923/item