Sorry I meant this machine is a Case 721B. I found and installed a TCM from a Hyundai loader (ZF said the programming and shifts are the same). Pin 22 according to the Case electrical diagram, should receive 24V if all the safeties/switches are working correctly. The problem is the Hyundai TCM I installed appears to want 24V to declutch. I am starting to believe the Case/Hyundai are opposite on Pin 22 for declutching. The declutch dash switch is normally opened so the only way for 24V to get to the TCM would be through the declutch brake pedal switch. When you push the dash switch it bypasses the brake pedal and allows 24V into the circuit. I don't believe there is any back feeding as the circuit lines up with the diagram when things are switched on/off. Pin 18 and 35 are grounded good at the connector (unplugged), pin 33 is good to the solenoids but not ground (checked unplugged) I believe it is supposed to be a dedicated ground to the TCM so that should be okay.