Author Topic: WR400 horn  (Read 192 times)

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Offline Quiggs66

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WR400 horn
« on: August 17, 2017, 10:47:21 PM »
Hi guys. The horn on my 85 WR400 is pretty piss weak....can hear it above the engine.....just. But if the lights are on, the horn doesn't sound at all. I put a cheap after market horn in as an experiment, and it didn't sound at all, even with the lights off.

Could this be a dodgy alternator? Anyone had the same???
PE250X

Offline Slakewell

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Re: WR400 horn
« Reply #1 on: August 18, 2017, 08:00:19 AM »
Bike is F##ked give it to me  ;D
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project.
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Offline euro bikes

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Re: WR400 horn
« Reply #2 on: August 18, 2017, 05:52:47 PM »
What voltage was the new horn could be the wrong voltage.

Offline grouty

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Re: WR400 horn
« Reply #3 on: August 19, 2017, 11:41:39 PM »
If you are running the standard Husky electrical system, it is probably AC. My old 390 motoplat system would not run an AC horn. I guess the generating system was feeling it's age. AC horns take a great deal more current to run than a DC one. If you put a DC horn on an AC system it will probably not work, and vise versa.
I fitted a new Electrex World ignition and lighting coils a while back. The system was wired as AC and the new AC horn would not work.
Long story short, I now run a Power Dynamo (MZB) system as a DC, and the horn (using a new DC horn) and lights are great.
I've got one on both of my Husky's and rate them highly.

Are you running the SEM generating unit ??  You could try a voltage regulator/rectifier to create a DC current to your lights and horn.
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