I think we have a solution here.
Installing AutoFlush on Older Model Generators SN:899,999 and below
1. Remove the connector from the "C" location in the jacket. Cut off the connector where shown and strip back the wires approx 0.375"
2. Cut the connector off the AutoFlush cable where shown and strip back the wires approx 0.375".
3. Remove the knockout in the side of the generator and install a bushing to prevent chafing.
4. Route the wires from the AutoFlush through the knockouts and connect the white wire from the AutoFlush to the white wire from the circuit board using a wire nut. Repeat for the black wire.
IMPORTANT NOTE: Contact Technical Support for installation of any equipment not shown in these instructions. (800) 707-2862 http://www.steamsaunabath.com/catalog/files/Autoflush System rev3-08.pdf