engine fan light on trucks off

As soon as I turn my truck off my engine fan light comes on and stays on , driving me nuts appears to work as it should going down the road , with ac. On or off usually manually engage it around 200 cause it doesn't come on till after 215 i wanna say , I'm at a loss ideas as to why it's turning itself on or at least the dash light when trucks key is off ...thanks

 

Oh sorry 04 t2000 c15

 

But everything is off , manually not engaged and not engaged when shut off , light on dash comes on as soon as you shut the truck down and stays on I'm talking for hours I don't know exactly how long cause I only let it go for 4 hrs last night before I fired the truck back up , as soon as you start the truck light goes out , unless my hub is leaking enough air that as soon as the trucks not running to supply constant air the hub engages ?

 

That's just it the key isn't in it

 

Ok got some new info , the ignition switch isn't fully shutting off it seems to go from on to accessory even though it's in the middle.. is this a bad ignition switch or a relay somewhere and how do I test , with truck key off and pulled out I can still run my heater controls and anything that should be accessory but I blow the 10 amp fuse..