I just acquired a 1988 Chevy 1/2 ton Silverado, short bed, 4WD.
350, auto..

The truck had the horns disconnected.
I don't know why.

There are two green wires that look like they were cut (disconnected) to the driver side horn.
The black wire is still intact on the harness.
Just a wild guess..
I assume the green wires are ground and the black wires are hot.

The passenger side horn is connected but does not work..

I don't get any voltage through any of the wires from either horn.

I do not have a 'horn' fuse on the fuse panel located to the lower left of the steering column.
Is there a fuse just for the horn?

The horn button on the steering wheel has a connector (female) that is not connected to anything.

There is no wire coming through the column for the horn button..

I tested the horns and they work using a 12 volt battery.

I need to know how to connect them, any relays??..where they are at if applicable..wiring and a scedmatic would be very helpful.

Any help would be appreciated.

Thanks..

Josh