Horn Not Working

1269 Views 15 Replies 8 Participants Last post by Liam_Bee, Apr 25, 2010

therat

Discussion Starter · Apr 2, 2010

Hi Everyone, I have bought a used Momo steering wheel with boss and horn push off ebay. I fitted it and it worked and then it stopped working. I dismantled it to see if there was something wrong, could see anything untoward.
Heres what I have:
When the horn is pushed I can hear a clicking from the left side of the engine bay (relay)?
I have over 12 volts at each horn spade connector.
If I take the spade connector off the rear of the horn push and touch it to the metal ring the horn push sits on at the center of the wheel I it clicks.
I have put the old steering wheel back on and it does the same.

I would really appreciate any input you could give me on this one as I am at a loss just now

Thanx

Bill

1 - 16 of 16 Posts

TheDinkyToy

· #2 · Apr 2, 2010

Do you have air horns fitted?

The only problem I had with the horn on my Mk1 was the fuse, my brake lights stopped working too (same fuse).

Give your brake lights a check can't hurt I guess.

therat

Discussion Starter · #3 · Apr 2, 2010

TheDinkyToy said:
Do you have air horns fitted?

The only problem I had with the horn on my Mk1 was the fuse, my brake lights stopped working too (same fuse).

Give your brake lights a check can't hurt I guess.

Thanx for replying. No I didn't have air horns fited, just the stock ones
I have checked the fuse and the brake lights and they all are OK.

Liam_Bee

· #4 · Apr 3, 2010

Has to be either the horns have a bad earth or they have packed up if you are getting 12v at the horn spade connectors, I would..

1) take the horns and brackets off and give it all a good wire brushing to clear any corrosion - they earth via the fixing screw and bracket.
2) ******* test the horns by wiring them direct to a battery/booster (live to spade, earth to bolt, wear ear protection and be very careful!!)
3) pm me as I have some spare horns I could send you

therat

Discussion Starter · #5 · Apr 4, 2010

Liam_Bee said:
Has to be either the horns have a bad earth or they have packed up if you are getting 12v at the horn spade connectors, I would..

1) take the horns and brackets off and give it all a good wire brushing to clear any corrosion - they earth via the fixing screw and bracket.
2) ******* test the horns by wiring them direct to a battery/booster (live to spade, earth to bolt, wear ear protection and be very careful!!)
3) pm me as I have some spare horns I could send you

Hi Liam, thanx for the reply. I haven't tried the direct wiring approach, I suppose I should really. What I find most confusing is when I fitted the new steering wheel I did nothing under the bonnet, actually I didn't even have the bonnot open. The horn was working with the old wheel on and immediately after The 'new' one was put on. Surely, the chances of two horns breaking at the same time is very rare.

Regards

Bill

ric

· #6 · Apr 4, 2010

therat said:
Has to be either the horns have a bad earth or they have packed up if you are getting 12v at the horn spade connectors, I would..

1) take the horns and brackets off and give it all a good wire brushing to clear any corrosion - they earth via the fixing screw and bracket.
2) ******* test the horns by wiring them direct to a battery/booster (live to spade, earth to bolt, wear ear protection and be very careful!!)
3) pm me as I have some spare horns I could send you

Hi Liam, thanx for the reply. I haven't tried the direct wiring approach, I suppose I should really. What I find most confusing is when I fitted the new steering wheel I did nothing under the bonnet, actually I didn't even have the bonnot open. The horn was working with the old wheel on and immediately after The 'new' one was put on. Surely, the chances of two horns breaking at the same time is very rare.

Regards

Bill
[/quote]

might be a dud relay...easy to swap

Chris' UK Miata

· #7 · Apr 4, 2010

If you can hear the relay clicking, that would say the button side of the circuit is working. It may just be sods law that a bad earth has occured at the horn after you fit the wheel!

Might be wise to check continuity between the relay and the horn (although that's quite a faff), if not, as already said, try hotwiring the horns (carefully and with ear defenders!) and or testing the relay.

Chris

Liam_Bee

· #8 · Apr 5, 2010

I suspect sods law at play, with a bad earth - you said you were getting 12v at the horn spade connectors so that pretty much rules out the wiring upto that point??

Liam_Bee

· #9 · Apr 5, 2010

I suspect sods law at play, with a bad earth - you said you were getting 12v at the horn spade connectors so that pretty much rules out the wiring upto that point?? Only way I could think
that the horns themself would both go bad would be if you left the battery connected when working on the steering wheel and somehow sent lots of small pulses to them, but that would probably do the relay in first?

Mr East

· #10 · Apr 5, 2010

I also have my horns randomly stopped working!

I'm not sure if a really clicks or not when I push the button.

What spade connector on the horns are live?

Liam_Bee

· #11 · Apr 5, 2010

Each horn (early models only have 1 horn) has only 1 spade connector and this goes live when the horn is pushed, a quick way to check without a multimeter is to put a bulb onto the spade and earth against the body and see if it lights when you press the horn (side reflector bulb holders are great for this sort of thing!!)

Tommy_G

· #12 · Apr 24, 2010

My horns are doing the same thing... just clicking. Any luck with fixing this?

Tom

Tazz

· #13 · Apr 24, 2010 (Edited by Moderator)

Same thing happened to me when I changed my steering wheel. It was a bad earth on the inner rim of the steering boss, where the push-button earths. Try spinning the push-button around a few times and it should make better contact. Also try a prise it out a bit more so the contact is more firm. You may also find that pushing the horn button at the 12 o'clock or 6 o'clock position may also work. It's trial and error. Otherwise - your horn has problems in other areas.

Tommy_G

· #14 · Apr 24, 2010

The horn makes the clicking sounds from what looks like a plug on the left handside of the engine bay. (relay?)

Its also the wheel with the airbag...1995 1.8 and two buttons

Tommy_G

· #15 · Apr 24, 2010

I guess my horns are funked as i just direct wired both of them and neither worked. Didnt take off the other power cable as i couldnt get the dam spade connector off!

Any other ways to test or fix this problem

Liam_Bee

· #16 · Apr 25, 2010

I replaced both of mine with a nautilus compact air horn - nice and loud - and if the OP isn't interested in my old ones the offer is extended to yourself (just cover the postage and they're yours!)

1 - 16 of 16 Posts

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