IF you are getting a spark with everything off, there either something else on that circuit or you have a pinched wire somewhere. Have you worked on anything lately? Maybe the fan wiring is crushed where it goes around the inner skin. Could be worth dropping the inside fan panel to check.
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins