1999 Silverado truck horn problem

[unotrouble2]

Hi,

My horn slowly stopped working (sounded garbled towards the end until it eventually died) so I removed it and for kicks I hooked up a couple of wires and tried it on a 12 volt batter that I had lying around just to make certain it didn't work. It didn't, so I went to the local auto store and picked up a generic replacement horn. I then tried this new one on the same 12 volt battery and it worked just fine. After installing this new one on the truck it still doesn't work - any ideas where to look next?

Thanks

[Macgyver55]

Does the new horn have the same connector? If so, there are several possibilities.......fuse, horn button, clock spring, horn relay or a wiring problem. I'd start with the fuse, then by testing for current while the button is pushed and for a good ground at the connector that plugs into the horn.

[Jeremy airjer W]

The horn is power side controlled. The green wire should have power when the horn button is pressed. The black wire should be grounded all the time. If there is no power than check the horn fuse.