Ok... went and explored today under the seat.
Couldn't find a leak, couldn't feel any air moving. We did think we heard a "hissing" sound after the motor had been on a few seconds.
Here are some shots from under the passangers seat, maybe someone might be able see/think of something.
I believe the aircompressor is the black box at the top of the screen. The skinny blue/green/yellow wires/tubes coming from it I believe lead into the lumbar supports.
I don't know what the much thicker blue & green tubes are, but with testing we think they are part of moving the seat around.
Tighter shot under the air compressor
Another shot.... I believe the black box at the top controls the heated seats.
That'* the tubes coming from what I believe is the compressor in the top left.
This is under the passangers seat closest to the center console.
I'm going to see if I can find some "fog" or maybe a smoker (really prefer something that doesn't smell) to see if I can "see" air movement when I turn the seats on to indicate a leak.
Will, you mentioned the control center for the relays is under the drivers seat.... does that control what tubes get open/closed when the buttons are pressed?