Bench test complete. According to the circuit board, “Fan” is connected to ground when the Auto/Fan is set to Fan and the Low/High switch is on Low. “Hi Fan” is not connected to ground. When I flip the Low/High switch to High, “Fan” is still connected to ground as is “Hi Fan.” Which is weird, because it seems that my Low and High fan wires are backwards according to the Mod diagrams. No bother. Just find the one wire that gets the fan running and wire that in permanently. The other wire would go to a toggle switch. Maybe when Summer rolls around, I’ll get a better feel for Low vs. High since they both sounded the same to me.
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-Scott, DW, DG, DB, and DD
2011 Passport 2590BH
2009 Ford F150 SuperCrew F X4 5.4L w/Max Tow
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