I have an 04 Ram 1500 and after I parked my truck it started honking on it's own over 4 hours later. It started with a few intermittant bursts and after a few minutes it started honking non stop. This truck doesn't have alarms or power door locks. I removed the fuse to stop it, does anyone have any ideas on what it required to repair the problem?

 

I would check the wiring since you said it happended four hours after you were out of it and i don't recommend touching the steering wheel since it has an air bag i would take it to the dealer and have them check out that part of it, the switch might have just went bad for the way you said it started off and them wouldnt shut off till you pulled the fuse.