South Wales Trail Riders

    horn relay?

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    bonkeye

    Posts : 653
    Join date : 2012-01-01
    Age : 38
    Location : Pyle, Bridgend

    horn relay?

    Post by bonkeye on Tue Apr 02, 2013 10:35 pm

    in the middle of making a new loom for the bike do i need to use a horn relay for the horn or can i just run a positive wire via a button for the horn?
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    bonkeye

    Posts : 653
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    Location : Pyle, Bridgend

    Re: horn relay?

    Post by bonkeye on Mon Apr 08, 2013 6:53 pm

    anyone?
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    Hopes Dad

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    Re: horn relay?

    Post by Hopes Dad on Mon Apr 08, 2013 7:02 pm

    Normally they work by switching 12v onto the horn.

    So you would run the 12v to the horn, then complete the circuit running it to the switch. Can't ever remember seeing a horn run through a relay.

    Best way to check is to mock it up on the bench with a horn, switch and battery.

    Give me an hour, will check on my road bike to be sure ( no, I'm not Irish! )
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    bonkeye

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    Re: horn relay?

    Post by bonkeye on Mon Apr 08, 2013 7:13 pm

    ok cheers.... my bike aint got battery so its AC power if that makes a diffrance
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    karlos

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    Join date : 2010-01-27

    Re: horn relay?

    Post by karlos on Mon Apr 08, 2013 7:44 pm

    Your reg/rec will change your voltage to DC. Just wire as HD says. No need for a relay.
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    phil990

    Posts : 2260
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    Location : Bridgendish. Welsh Riviera...

    Re: horn relay?

    Post by phil990 on Mon Apr 08, 2013 7:51 pm

    Horn has to be 12Volt DC Sad
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    bonkeye

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    Re: horn relay?

    Post by bonkeye on Mon Apr 08, 2013 8:02 pm

    dont have a regulator rectifier just a regulator
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    Hopes Dad

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    Re: horn relay?

    Post by Hopes Dad on Mon Apr 08, 2013 8:02 pm

    Right, here goes, from the neighbour who knows, modern sports bikes use a relay to switch twin horns which are high output ( noise ) using a big current.

    So they are wired direct from a big output such as a battery, with heavy cables. The switch, which is usually small & compact, simply opening the relay, which switches the supply to the horns.

    For a single horn, which is just fitted as a mot requirement, to a dirt bike, where youreally don't care about how loud or powerful it is, you can run the supply, or complete the circuit, via the switch on the bars, so no need for a relay.

    Unless of course your from Bridgend & want a set of Air horns playing the dukes of hazard, then you will need a relay & probably a small compressor too lol!


    Make sense?
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    bonkeye

    Posts : 653
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    Re: horn relay?

    Post by bonkeye on Mon Apr 08, 2013 8:05 pm

    yeah makes sense..... all bar the bridgend bit lol, im a Cwmcarn lad only moved to bridgend with no choice now stuck here thanks to the wife Sad
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    Hopes Dad

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    Re: horn relay?

    Post by Hopes Dad on Mon Apr 08, 2013 8:11 pm


    Ah, I thought you said before you were from this area, in that case you probably have the air horns already fitted, along with the cow horn handle bars complete with bar tassles ( I use my wifes old nipple tassles for my bike ) lol!

    When are you giving the new improved version its first run out?

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