ok i got a 2004 ranger edge. one morning i went out to my truck to head out to work and as i always do i turn my headlights on , i firmly belive in using headlights all the time, so i turn them on just the headlights and all of the sudden i got not only the headlights but i got windshield washers and wipers high speed, horn continualously blowin and the thing just got a mind of its own!!!!i was just wondering if anyone else out there has had this problem or heck even a good wiring diagram so i can see how if any way at all the 3 swithes are even any way tied together, and when i turn lights off they dont go out, i can hit my washer swithch and turn on park lights and all sort of weird stuff. any help at all would be helpful. please and thank you, kinda tired of have to pull a fuse to kill power to everything

 

Unhook your battery and let the truck sit for like 5-10 minutes to reset the computers. That may fix it.

 

Could be a bad Multifunction Switch in the steering column

 

Sounds like a short in the wiring.

 

Bad cab/chassis ground.