1961 C20 Electrical problem

[gpk1961]

Good evening all!

Last week I was putting my 61' back in my warehouse and I turned a corner into the parking lot and the horn stuck on. I got her inside and pulled the horn plug to stop it. Looked at the horn button on the wheel - it was clean inside with the plastic intact. I left her in the dark and in the morning she would not start..."as dead as Kelsey's nuts!" ...as they used to say. I jumped her and got her running and plugged the horn in -- still stuck on.

Shut her off and disconnected the battery and heard the click of the horn relay. I replaced the horn relay and - yes - the horn is still stuck on and when the battery is disconnected, it (the horn relay) still clicks. (and would drain the battery again).

No other issues..lights, brake lights and directionals all good...guages work as well. I drove her tonight and all was good. I should mention that prior owner installed an after market directional switch (that works well) and I can see some 'custom' wiring into the fuseblock...

ANyone have this happen? What do I chase down next?

gpk1961