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April 17th, 2011, 02:02 AM   #1
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From: Wisbech Cambs UK

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Horn not working - Help please

OK - new thread as I got wronged for adding to an old a while back but the info contained is relevant (ned) but I take your point...

viewtopic.php?f=5&t=5512&p=113490&hilit=horn#p1134 90

There is also a thread called No horn power that I've explored too - interesting & may be relevant but ??

Anyway need an mot in order to go to FRUK in a couple of weeks & I can't get the horn working.

All the relevant wires are good (continuity checked) (orange / Red-white / brown).

Horn OK (also I've borrowed the horn off my husky which also works).

Battery totally dead - never bother with it now as bike kick starts so easy.

All lights & brake lights work (when running obviously).

Kill switch works (same switch cluster as horn & lights).

Re previous thread (ned / ghost / taffy) if I check the voltage on the battery when engine running I get 0.
If I check the voltage at the reg.rec red&yellow I get 0.02v.

So, sod it I'll take a live from somewhere else & hook it up - only need horn for mot - did ask if I could use an old squeezy reed horn but no chance.

So knowing the lights work, put the volt meter on the headlamp yellow when running & get 0.02v. (&several other places).
Wire it to the horn & get nothing.
Obviously 0.02 is effectively 0 & cant be right - so why do the lights work.

Given, I just need a quick fix - got any ideas...


arkley123 is offline  
April 17th, 2011, 03:50 AM   #2
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From: Fayence, France

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Re: Horn not working - Help please

the horn is a DC device and draws a fair current too. If your rectifier/regulator is dead, and it sounds as if it is, you'll only be getting AC on the power circuits. The lights will be happy with this, but your horn will be as dead as a dodo.

To confirm, check with your multimeter if you have a reasonable AC voltage on any of the power circuits with the engine running...across the headlight will do as you definitely have power there.

If you have AC, replace the regulator/rectifier and all should be dandy. To avoid further issue, I'd look carefully at the condition of your battery. If you've a dead short (a possible failure mode), the replacement reg/rec will not last long; replace the battery too. Alternatively if you don't want the expense or weight of the battery, take it off completely and replace it with a large capacitor. I'm sure you'll find a thread on this somewhere, but if not shout and I'll describe what to do for this mod.

Incidentally, pretty much any 12V reg/rec will work on your bike if you wire it up correctly, so if a new Husaberg part is silly-expensive, take a trip to your nearest breaker and see what you can pick up. If I remember correctly I'm running a part off a Kawasaki GPz500...

Cheers... Paul
tinwelp is offline  
April 17th, 2011, 10:16 AM   #3
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Re: Horn not working - Help please

Hi Paul,

Thanks for the pointer....definately the reg / rect....

So as a quick fix, hooked the horn live up to the live yellow that comes fron the stator (G) where it changes into a red that powers up the lighting switches. Works a treat.

May well take your advice and get rid of the battery altogether.
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