Depending on the type of
doors you have, you might be able to use a simple DPST relay to momentarily close the circuit for the Wash Gear system when the stop button is pressed. I had to use a programmable relay and input everything from the rotary switch and set it up to close the "STOP" circuit when no output is detected.
I used the Siemens Logo programmable relay - the ladder program is fairly extensive.
Each relay is installed in the bay.