[Richard]

Chappel, the Recaro seats of that era were equipped with over the top engineering system for controlling air to the air suspension. I never got mine to work properly. I bypassed the "brain" and the control solenoids with a simple pneumatic paddle switch. I feed the bladder under the seat from the pneumatic switch. It's how it is normally done.

If you decide you want air suspension for your Recaro, I can walk you through what I did.