crazy problem!, ELECTRICAL! PLEASE HELP! Options

[pittfirefighter]

ok so i was at work when a co worker was nice enough to tell me that my lights were left on... i figured interior lights since its impossible to leave your headlight on by accident in our cars... well i was wrong.. my headlights were on... i turned them off and figured the switch to turn them off (ground point at driver door) must have stuck whenever i opened the door and the lights didn't turn off... no big deal... well now here comes the problem

i parked my car at home and three hours later went out to find my headlights on and my windshield wipers going... the car was not on.... i turned the car on and turned off the lights but the windshield wipers keep going... and going and going... turning the switch does nothing... i even disconnected the switch at the column and pulled the fuse and they still keep on going... obviously there is a short somewhere... anyone have any ideas... i tried to trace it the best i could but its so hard with all the snow here.... please help with any ideas!! i don't see any pinched wires in the steering column near the switch...

[Batman722]

if it's not sealed properly, it's easy for water to get through.
this is what happen to me





the driver's side (a-piller) side of the windshield was not sealed. I could push up on the inside and see it move outside
water leaked in, dripped on the flasher relay and some of my chassis harnesses and BAM, bad things happened.
since I've replaced the burned harness, sealed the windscreen and things have been ok.

side note, when I unplugged the burned harness my wipers came on and wouldn't go off (along with a few other random things too)