[dead250]

Hope someone can help. I have a 2001 f250 diesel and when I turn the ignition off the heater blower doesn't turn off. The blinkers also work with the key off. Short of tearing the truck apart I have tried all I can think of. If I pull the blower relay the blower turns off, I can then put the relay back in and it stays off until I turn the key back on. I unplugged the pcm thinking maybe it fed through there and it didn't help. I removed the ignition switch and unplugged it and that made no difference. I found that if I put a ground on the gray and yellow (I think) wire on the ignition switch everything turns off but as soon as I remove the ground the blinkers start again but the heater stays off. My chiltons doesn't give me any good wiring diagrams for the ignition switch, so I am not sure if there is a relay somewhere that is supposed to switch to ground. Sorry this is so long, just trying to provide as much info as I can think of. Thanks, Matt

 

[dead250]

fuse box is full of corrosion. thanks to anyone who read this