Fanzilla and VOltage problem

[Joe Palatinus <jpalatinus@xxxx>]

Since the majority of my problems has to do with the A/C and cooling fans
comming on I decided I would try to change out the fanzilla with the one
from my other car. When my Ac was on and the blower in 1st speed, the fans
would still cycle on and off, I was under the impression that Fan zilla
keeps the fans on all the time when the ac is on max, regardless of blower
motor speed. I changed out the fan zillas, but it did the same thing, I
wonder if it is a circuit breaker or something any ideas. If I have any
two of the following items on, my voltage goes to nill. AC (max or norm)
BLower motor, and lights. I can have the mode switch set to vents, and
blower on max, but if I turn my lights on the voltage goes to pot. If I
have the ac set on max, and my blower motor off or set to one, but my light
on makes the voltage go to pot also. If I just have either one of these
three items on I get 13 or really close to 13 voltage on my voltmeter, na
dI am certain that my voltmeter is accurate, as I have testested several
other places and gotten the same voltages. I really would like this
problem resolved I have tried 3 different alternators and they all do a
simmilar thing. 
THanks for your input

Joe Palatinus
VIN 17167 and 6808