you may have to run test the sires from the arens unit to the 7 way plug.
my tuscany has a secondary connection from the 7 pin connection, maybe your is loose or corroded.
try calling f/l 800 line....they may have some guidance
USN Retired, Life time member of the DAV.
Enjoying the 2008 Damon Tuscany 4056, #3998 no your eyes are fine, there are really 6 slides
2016 Expedition or 2012 Edge toads