there is a small plastic contact switch just inside the hose receptacle, some times it ......comes unplugged
you will need to remove the cover plate and then you can gently pull the whole thing out of the wall,
UNPLUG the vac first, even though its low voltage at the switch
then ohms check the switch.
if that isn't it
try to floor switch dustpan thingy and remove it, mine for some reason gets dusty.
and the wire nuts have been known to un-nut themselves.
we are lucky as most of the wiring is accesible through the basement
you can bypass both switches at the vac to see if the wiring is not connected
my wiring at eh vac runs up and across the frame member and was not very secure, this may also be a spot to put and eyeball on the connections.
dirt devil also has a wiring diagram on their website
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