AC Problem-2000 Beetle 2.0L

Hi; I just purchased this 2000 Beetle 2.0L and the AC does not work. This is what is happening and it is weird. First I tested power at the AC Compressor connector. I get a constant 4.5 volts all the time- car on or off, running, or not running. I assume I am suppose to have 12 volts to run the Compressor Magnetic Clutch. I hot wired the compressor from the battery to the magnetic compressor clutch and it does not kick in. I believe I will have to replace the compressor to, but I gotta get the 12 volts to the connector and find out why the constant low voltage in which probably burned out the magnetic clutch as the 4.5 volts are there all the time. I bought a Heynes Repair Manual and looked at the wiring diagram for the AC. From the connector going back towards the AC switch, one wire goes to ground and the other wire goes the Coolant Fan Control Module, what that is and where it is, I don't know. I did remove and replace the Relays or Modules (?) under the dash on the drivers side. The tongue were somewhat corroded and I emeryed them clean. The second one from the seft does shut off the blowers and turns off the AC push button light, but everything is the same. What do you think? I need anyones 2 cent input. Thank you DoubleNickel55

Posted again, Reorganized
Hi: I just purchased this 2000 Beetle 2.0L and the AC does not work.
First, I tested the power at the AC Compressor connector. I get a constant 4.5 to 6 volts all the time with the car on or off, running or not running.
I assume I am suppose to get 12 volts to run the AC compressor Magnetic Clutch. I hot wired the compressor from the battery magnetic compressor clutch and it does not kick in.
I believe I will have to replace the compressor to, but I gotta get the 12 volts to the connector and find out why the constant low voltage in which probably burned out the magnetic clutch as the 4.5 to 6 volts are there all the time.
I bought a Heynes Repair Manual and looked at the AC wiring diagram for the AC.
From the connector going back towards the AC push switch, one wire goes to ground and the other wire goes to Coolant Fan Controll Module. What ever that is and where is, I don't know.
I did remove and replace the relays or modules (?) under the dash on the driver's side. The tongues were somewhat corroded and I emeryed them clean. The second one from the left does shut off the blowers and turns off the AC push button light, but everything is the same.
I checked the fan fuse at the fuse panel and that is ok, also I checked the three larger fuses under the hood near the battery and they are good also.
What do you think? I need anyones 2 cent input. Thank you
DoubleNickel55
:attention

Ah!! My wife is taking me to the Mental Health Unit!!!
I just found this!!
Failure of clutch to operate correctly may be the result of insufficient voltage to coil (12.5 volts required; 10.5 to 10.8 volt minimum with all electrical accessories on), low voltage feedback from blower motor operation, or from other system electrical components.
:bananasmi
I Need Help!!

if you have battery voltage to the clutch try making your own ground for a second or two and if the clutch kicks in that replace the fan control module under the battery tray. IF the compressor doesnt come on replace the compressor/clutch assembly

My 2000 Beetle had an intermittant problem with the AC. Turned out to be the 30 amp fuse holder located on top of the battery cover. Maybe corrosion caused a poor contact, but the holder began to distort. When this fuse is out, the fans & AC stop working! It was an easy fix. My holder just needed some contact cleaner and a new fuse (the old one was "fused" on one prong, so it broke on removal).
Cheers Eric