Horn Switch Wiring

[Captain Phoenix]

Update:

My horn had randomly started working and was good for the last year but stopped again in time for me to fail inspection yesterday. When I put a bare wire into the plug at the clock spring and ground it the horn goes off. I took the steering wheel apart yesterday to check the contacts on the switch and when I saw the wire that I unplugged from the unit I decided to try to ground it there too as a means of checking the clock spring and got nothing. At this point I'm certain it's the clock spring, does everyone concur?

 

[blthomas]

I've been using threads here to learn and troubleshoot. Our horn was non op.

Went through a bunch of testing, had no power coming into the clock spring.

No continuity on that wire. Started chasing it from the PDC, found a thicker section that appeared "soft"".

It had corroded inside completely. This happened on my hazard circuit as well, but in a different part of the loom.

Repaired the corroded section, and touched the hot lead to the column center nut (had pulled the airbag for testing) and the horn sounded.

Anyway, the knowledge, diagrams, and downloading the FSM from here were huge in my success. Thank you.