Thanks y’all for the replies. Update: the compressor spins freely 360 smoothnot notchy.
I unplugged the only wire connection that I could see on the compressor. Like a one pole barrel type thing on the upper right side just underneath the PS pump. Right?
13.5 volts on the wire with ac on max LO. About 8v with the climate off
Jugging my lead blindly down the plug hole I see OL or very low resistance on the comp side.
Also, I can hear a chirping so Nd coming from the clutch when the engine is running like a bad bearing.
Thoughts? Looking like a bad clutch ya think?

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"