Plumber and I installed tub today... water, draining all good. After he left I pluged in the motor and pushed the air actuator (spelling) switch and nothing happened. I followed the air line and found out it is not connected. I can only see the motor from one side and don't see where it would connect on the motor, before I cut a hole in the drywall behind the motor I thought I would ask if anyone knows where it goes?? Thanks Bill