bad horn button on '96 t100

Disconnect the pos + lead to the battery. Remove the 4 screws on the back (forward facing) side of the steering wheel, and lift the airbag module off. Unplug it first, DO NOT USE THE IGNITION SWITCH WHILE THE AIRBAG IS REMOVED. Setting the ignition to ON will cause an airbag fault to be stored, and I'm all but positive that it requires a technician to turn the fault code off.

Now that the airbag is off, you have to remove the steering wheel to get at the horn button contact.

Having typed all of that so that my fingers are turned to bloody stumps, I don't think the horn button is the problem.

Thanks for your reply Jeff... Actually I'm glad I didn't see your post until after I worked on it last night. I did disconnect both battery cables and wait several minutes before touching anything. When looking at the column trying to figure out how to disassemble it I noticed the two pop out access panels on either side. Popping them out I could see the switch mechanism behind the airbag bracketery. A few squirts of some high dollar contact cleaner I purchased when I was restoring vintage Amiga computers fixed the problem and the truck was successfully inspected this morning.

Thanks again for your reply. Jeff

Excellent.

In my limited experience, when the horn ring is dirty, the horn will honk is some positions of the steering wheel but not others. Anyway, glad I could help.

In the future, the only battery calbe that needs to be disconnected is the Negative lead (I may have said positive earlier). You disconnect the negative lead because IF you happen to touch the body or other metal nearby the terminal, you will not arc it. If yoau re disconecting the Positive terminal, and touch any surrounding metal, you will create an arc. The arc can be violent and do serious damage to your tools or the body work. (There are actually welding kits that you can buy that allow you to actually perform welding operations directly off of the battery.)