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Horn stopped working

Posted: 08 Oct 2011 22:53
by TR7Aaron
Suddenly, my horn stopped working. Everything else seems OK. I pulled the fuse box cover but there is no diagram under the lid (as I was expecting to see). Can anyone tell me which fuse(s) would control the horn and/or relay?
Thanks!

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Aaron
1976 TR7 FHC (an ongoing project)
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Posted: 08 Oct 2011 23:41
by Beans
Not that difficult to pull out the fuses and check them [:p]

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<font color="blue"><i>1980 TR7 DHC (my first car, now restored and back on the road)
1981 TR7 FHC Sprint (better known as 't Kreng)</font id="blue">
<b>[url="http://www.tr7beans.blogspot.com/"]<u><b><font size="2"><font color="red">My Weblog</font id="red"></font id="size2"></b></u>[/url]</b></i></center>

Posted: 08 Oct 2011 23:44
by supercass
In my experience, with horns, it's very often earthing issues. supercass

Posted: 09 Oct 2011 01:02
by TR7Aaron
Well, it seems to be a non-issue now. I just came from the garage and it's now decided to work properly. The Lord of Darkness (and/or silence) seems to have given up this battle!

Aaron
1976 TR7 FHC (an ongoing project)
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Posted: 09 Oct 2011 01:34
by FI Spyder
They are grounded by the mounting bolt. I'd clean that up as well as the supply connection. I'd taken my horns apart to clean them up and paint them. The last one wouldn't work on car but would if connected directly to battery. Turned out I had reversed the two gaskets (different thicknesses). Once put back in correctly it worked fine.



- - - - TR7 Spider - - - - - - - - 1978 Spitfire - - - - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - - Yellow TCT
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Posted: 03 Jun 2012 19:40
by TR7Aaron
Well, they have decided to stop working (again). I have removed each and test by connecting directly to the battery and both work. I pulled the knob from the stalk and manually touched the two prongs together - nothing. Fuses seem to be OK. I'm guessing it has to be a connection or ground somewhere since this issue is intermittent.

Aaron
1976 TR7 FHC (an ongoing project)
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Posted: 03 Jun 2012 20:22
by TR7Aaron
I'll correct myself - it was the horn relay. On the USA cars, it's located in the engine compartment, next to the wiper motor. Anyone have a part number for this?
Thanks.

Aaron
1976 TR7 FHC (an ongoing project)
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Posted: 03 Jun 2012 23:48
by trekcarbonboy
Just take the relay to the local parts store. They are pretty standard and the numbers are right on them.

Craig '75 2.0 FHC
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