My horn relay is missing.

[Zappafan]

I've been trying to get some of the wiring issues sorted out on a 64 GMC. One of the things that doesn't work is the horn. The internals of the horn button seem to be correct. But when I look at the wiring diagrams they all show a horn relay. Did this year come with a generator or an alternator? Mine has an alternator. My horn has a green wire going to it from a plug that has a red and black wire going to it. The other wires that are branching off from it are going to the plug that plugs into the head light harness.

[aerotruk63]

According to RockAuto this is the replacement horn relay. Anything like this attached to the rad support beneath the voltage regulator?

[Zappafan]

I've looked all through the engine compartment and inside the cab by the fuse block. I can't find anything that resembles a horn relay. My voltage reg is on the inner fender close to where the alternator is, passenger side.

[jtrichard]

Originally Posted by Zappafan

I've looked all through the engine compartment and inside the cab by the fuse block. I can't find anything that resembles a horn relay. My voltage reg is on the inner fender close to where the alternator is, passenger side.

That's because its missing .... plug the green wire to the horn and the 3 plug in the pic to a new relay as seen in other pic

[Zappafan]

I love it when the obvious is right in front of me but it takes somebody else to point it out. I'll be ordering a new horn relay today. Ordered!!!!!!

[jtrichard]

We ALL have them DUH moments no problem

[Zappafan]

Ya, that was mine. The good part is that once the relay was installed and I diddled around with the horn button.........I now have a working horn. It is loud!!!