1975 Beetle horn wiring

[75Flamebug]

I have a horn that was disconnected that I want to hook up because my brother got backed into when he was driving my 1975 beetle (that I just bought a week prior ). He couldn't have done anything because the shifter was stuck and he couldn't get it into reverse and there was no HORN. I was wondering how to trace the horn wire from the steering column. I know that the wire does not go all the way down under the fender where the horn was located. Could anyone help me locate it?

Thanks!

~K-VW

[ashman40]

There are two wires that run to he horn:

Black/yellow (#15) wire which brings 12v+ from the fuse box to the horn. The horn has constant 12v+ while the ignition is ON. This black/yellow wire is spliced into the same black wire that powers the brake switches.

Brown (S-) wire which runs to the steering column where it connects to the horn button. When the horn button is pressed the brown wire is connected (shorted) to ground.

Both wires should run down the left side of the fuel tank and drop through a slot to reach the horn. Brake wires run the same route.

The brown wire to the horn button is more complicated. This is a switched ground. It runs into the steering along with the other ignition switch and turn signal wires. It should connect with one of the brown wires from the turn signal and terminates at the large brass "ear" or "wing" on the face of the turn signal assembly. This will contact with a brass ring conductor on the underside of the steering wheel. This allows electrical contact even while the steering wheel rotates. In some model years this makes the entire steering wheel and steering column part of the negative circuit. In the later years, I believe there is a wire from this ring that runs to the horn switch/button. When the horn is pressed this wire is grounded.
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AshMan40
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'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!}

[75Flamebug]

Thanks soo much! When you say the left side of the fuel tank, does that mean the left when sitting in the drivers seat? I have always gotten confused with that.

I will have to try to see if I can locate the wires tonight when I am not at work.

Thanks again! @AshMan40

~@K-VW b

[ashman40]