Thanks so much for the information. I connected 'A' to 'C,' and now the middle piece (with the NipponDenso label) spins when I turn on the AC. Before it didn't spin with AC on or off. I'm assuming this is the compressor?
The outside pulley and belt spin no matter what--AC on or off. Is this the correct behavior for everything in this part of the system?
The other question is, why was it disconnected. Are there functional reasons someone would leave this disconnected?
