Horn issues

[Oldtimer]

Can you loosen screws holding switch and scoot it enough to move upper contact inboard?

 

[thegreatjustino]

The horn blows as soon as soon as the steering wheel touches the contacts. From what I can see, it appears that the inner contact is too close to the outer contact and hits the outer contact ring on the steering wheel.

Read Bowsher's post again. He's not telling you to do anything with the steering wheel.

 

[Jonathan_Cole]

Read Bowsher's post again. He's not telling you to do anything with the steering wheel.

I have. He also realized later in the post that it's a two contact switch not a single.

 

[Broncobowsher]

I don't know the back of the steering wheel enough to know if it is the right one for a 2- wire horn. I'm guessing not.

 

[nvrstuk]

The single wire, double wire Ford horn wiring is a total cluster! Dang. A buddy was restoring a '77 3 yrs ago and we fought and fought and ordered several different switches and we finally got it to work properly. So many changes we made I can't remember what fixed it. Dang Ford. I cuss them out all the time when working on them compared to Chevy's for their TOTAL lack of continuity and interchangeability of wiring, parts, etc.

This is why Chevy stuff is used so commonly for hot rods...

 

[Jonathan_Cole]

I don't know the back of the steering wheel enough to know if it is the right one for a 2- wire horn. I'm guessing not.

I put the old wheel on just to check it. It does the same thing which tells me it's the switch.

 

[Broncobowsher]

I put the old wheel on just to check it. It does the same thing which tells me it's the switch.

Doesn't tell me anything. The slip ring is separate from the horn button. So far you have not isolated those two items. You are combining them and just calling it the steering wheel.

 

[73azbronco]

so somehow you are grounding out, after you shortened the shaft. Maybe chaffed a wire in tube running up side of column?

what you need to do is start chasing the circuit, what is grounded, what is not, what has power.

 

[Broncobowsher]

so somehow you are grounding out, after you shortened the shaft. Maybe chaffed a wire in tube running up side of column?

what you need to do is start chasing the circuit, what is grounded, what is not, what has power.

That would be a 1-wire horn with a relay.
Pictures show 2 wires contacts. That is power on one brush and the horn on the other. Everything on the positive side being switched. Shorting to ground will not make this style horn go off.

There is the possibility that this is a 1-wire vehicle with a 2-wire horn turn switch installed. Where that extra wire is connected to under the dash would get interesting if that was the case.

 

[nvrstuk]

What Bowsher said... 1 wire vehicle with 2 wire horn switch or vice versa LOL. We went thru this.

Took a while swapping parts

 

[Jonathan_Cole]

I received a response from Dennis Carpenter. I was advised that the switch they sell is for serial numbers 50,000 and under.

 

[Jonathan_Cole]

I "think", hope and pray I found a resolution.

I had the original steering shaft cut down to add a collapsible lower shaft.

I believe the upper shaft was too short.

I bought a new upper from TBP and put it in this week.

I believe "and hope" that when everything was together previously it was smashed together too tight causing the switch to either distort or just short out.

So far so good. Hopefully it lasts. If it doesn't im running the wires to the washer pump switch.