Do you have the schematic? Dynasty Dash HVAC is on page 170 of my wiring book.
https://www.irv2.com/forums/download...do=file&id=319
The Signature has an SCS HVAC module 11-00636 (Page 9) but the Dynasty/Executive/Navigator diagram is different and I don't see a "module". My SCS module is on the center console floor same as Jetskier50.
Monaco's are snowflakes so anything's possible.
Brian, I've come to the conclusion there is no good way to keep the FRB dry and I should plan to remove & clean the backside of all of the boards in there every 5 or 6 years.