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Thread Tools | Display Modes |
05-08-2012, 12:25 PM
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Starter Motor
Join Date: Aug 2012
Posts: 1
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My 92 KH Laser Ghia horn started sounding at random times, e.g. 4am in the morning. Disassembly of the horn pad shows the horn pad consists of 2 copper plates separated by a thin layer of foam rubber, foam rubber has decayed and there are now multiple electrical shorts between the copper plates. (I've tried insulating some of the shorts, but the problem returns somewhere else within a short time - now most of the foam rubber is just crumbling away).
Has anyone experienced a similar problem? Any advice on the best fix. I'm guessing I can find a replacement horn pad at a wrecker, but it will probably get the same problem due to age. The KH Ghia had a different steering wheel (2-spoke) to all the other KH models (3-spoke). Does anybody know if the 3 spoke steering wheel had the same horn pad design? If the 3-spoke wheel had a better horn pad design, I could replace the whole steering wheel perhaps? |
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05-08-2012, 01:54 PM
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growing up is optional
Join Date: Feb 2006
Location: Gawler area SA
Posts: 3,303
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Can't help with the interchangeability of the horn pads, but have seen this on a lot of Lasers and Telstars of this era.
We used to get some sponge foam and slice it up to insulate the 2 plates. Glue it in with some contact adhesive on one side only and you should be right. Depending on the density of the foam you use, you might have to play around with the thickness to get it right. Somewhere like Clark Rubber should be able to supply what you need. |
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05-08-2012, 02:06 PM
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Moderator
  
Join Date: Feb 2005
Location: Kenthurst
Posts: 40,358
 
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Had the same issue ... the foam deteriorates over time.
I think my Mum just had the horn pad replaced and it fixed it. I think it was a GHIA's that had the issues as the horn pad was larger and curved back ... usually early morning sun would set it off as the exterior of the pad was expand in the warmth and cause it to contact.
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06-08-2012, 12:31 PM
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FF.Com.Au Hardcore
Join Date: Mar 2005
Location: Sausage Singlet NSW
Posts: 3,301
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I had a similar problem on a KH Laser Ghia a few years back. I arrived home after being out for a few hours only to have my neighbour come running out to tell me that the horn had been sounding full on for sometime but had just gone quiet. By the time I got to it the horn was roasted and the plastic coating had melted off
 , from memory I'm pretty sure mine was due to moisture in the relay and the contacts had welded together. A new horn and a new relay fixed the problem 
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KH Laser Ghia horn problems
Linear Mode
