No A/C, mechanics appear okay, clutch never turns on?

The car sat for 4+ years in garage. I performed much DIY work to get it back on the road, registered and inspected. All fluids changed (including AT torque converter fluid drained). New front suspension components: Upper CAs, lower ball joints. Brakes good. DIY resurfaced rotors to remove glaze that was causing severe pulasation/shaking when stopping. New door lock actuators. New blend door actuator gives heat now.

Last issue - A/C will not turn on including with control set to max A/C. Clutch never engages. There is 35-40PSI in the system low side at 70 degrees ambient temperature. Self-test on control head passed, no fault codes. I cannot access the clutch coil connector from above or below without moving a bunch of A/C plumbing. So cannot energize directly to test. Compressor turns just fine by hand with engine off. I also have an OBDII+ Bluetooth scanner which shows A/C press switch at around 0.25V. States of clutch, cycling sw, med pressure sw, and driver request all show 0 when Max AC selected. Hypothesis: mechanics ok. Prob is in the control system. Cannot locate VLCM which controls clutch if I wanted to try energizing clutch from there. I must be blind. Wiring diagram shows VLCM in "front lower center of engine compartment" as last stop before clutch energizing on purple wire. What do you suggest for the next step? Thx.