Electrical Problems - Horn and Backup Lights

[zipgun]

Hey everybody, it's been awhile. I have a 89 Burb with the backup lights stuck on and the horn inoperable. I think the wiring harness that controls both of these runs down the steering column and i think it may have shorted out on the column itself. The vehicle is a former law enforcement burb that had quite a bit of extra radio mounts and computer mounts in it. Just wondering if anyone has had the same combination of problems. Solutions anyone ?