i havnt drivin my truck since 5pm sunday nite well this morning my horn was going off and my nieghbor said it started going off at 6am....so it was going for 2 straight hours......if i put my key in the acc or on position and it goes off....if i put it back in the off position it goes off again...also the radio was on....any ideas?

 

Ok, clear this up for me, as your terminology is confusing.
Neighbor said the horn was going off. So when you got out there to your truck and got in the horn was still going off and the radio was on?
Then if you turn the key to to 'acc' or 'on' position the horn stops sounding, but if you turn the key back to the 'off' position it starts sounding / honking again?

 

Sounds like a ground to me.

 

yes u r right scrid...ok i just got off work and i had the fuse pulled all day... put the fuse in and the same thing happened.....im not blowing fuses either
*edit* does anyone have a copy of a wiring diagram for a 97 tacoma