Ey up

My wiring is bad, from previous owner. It always blew the fuse as did the
cig light if you used it.

MOT is due next week, now the horn would hav been in the middle of the
sterring wheel but thats a no no now.

I usually just put on a quick switch so the tester presses it and hears it
but it always melts the whole swich after 3 seconds.

I need to wire up a horn to a switch on the dash, can someone tell me what
gauge wire and what switch to get, i actually want a horn that will last!!

thanks

"Julian 'Penny for the guy' Hales"  wrote in 
message news:addVe.23344$k22.18008@fe2.news.blueyonder.co.uk...

> Ey up
>
> My wiring is bad, from previous owner. It always blew the fuse as did the
> cig light if you used it.
>
> MOT is due next week, now the horn would hav been in the middle of the
> sterring wheel but thats a no no now.
>
> I usually just put on a quick switch so the tester presses it and hears it
> but it always melts the whole swich after 3 seconds.
>
> I need to wire up a horn to a switch on the dash, can someone tell me what
> gauge wire and what switch to get, i actually want a horn that will last!!
>
> thanks


you need to get a relay, then the switch on the dash only earths a very 
small current, the relay gives a big current to the horn

mrcheerful

"mrcheerful ."  wrote in message
news:7RgVe.107283$G8.43154@text.news.blueyonder.co.uk...

>
> "Julian 'Penny for the guy' Hales"  wrote in
> message news:addVe.23344$k22.18008@fe2.news.blueyonder.co.uk...
> > Ey up
> >
> > My wiring is bad, from previous owner. It always blew the fuse as did
the
> > cig light if you used it.
> >
> > MOT is due next week, now the horn would hav been in the middle of the
> > sterring wheel but thats a no no now.
> >
> > I usually just put on a quick switch so the tester presses it and hears
it
> > but it always melts the whole swich after 3 seconds.
> >
> > I need to wire up a horn to a switch on the dash, can someone tell me
what
> > gauge wire and what switch to get, i actually want a horn that will
last!!
> >
> > thanks
>
> you need to get a relay, then the switch on the dash only earths a very
> small current, the relay gives a big current to the horn
>
> mrcheerful


thanks, will hunt around for the bits!



>
>

>> > thanks
>>
>> you need to get a relay, then the switch on the dash only earths a very
>> small current, the relay gives a big current to the horn
>>
>> mrcheerful
>


How much current will a horn pull?

Would it not be easier just to re-route an new say 1.25mm flex to the 
sounder and then a decent momentary switch?

There must be other problems/earth leaks/faulty sounder for it to melt a 
switch so quickly.... assuming its a decent switch?


Tom

Tom Burton wrote:


>>
> 
> How much current will a horn pull?


About 6A for a single note one. About 20A for an air horn compressor.

> 
> Would it not be easier just to re-route an new say 1.25mm flex to the
> sounder and then a decent momentary switch?
> 

Yes, but getting 1.25mm flex might be a problem :-)


> There must be other problems/earth leaks/faulty sounder for it to melt a
> switch so quickly.... assuming its a decent switch?
> 

Absolutely right.

Chris

-- 
Remove prejudice to reply

"Chris Whelan"  wrote in message
news:MLjVe.11718$Aa1.774@newsfe5-gui.ntli.net...

> Tom Burton wrote:
>
> >>
> >
> > How much current will a horn pull?
>
> About 6A for a single note one. About 20A for an air horn compressor.
> >
> > Would it not be easier just to re-route an new say 1.25mm flex to the
> > sounder and then a decent momentary switch?
> >
> Yes, but getting 1.25mm flex might be a problem :-)
>
> > There must be other problems/earth leaks/faulty sounder for it to melt a
> > switch so quickly.... assuming its a decent switch?
> >
> Absolutely right.


the button i used was a cheap small from a electronics shop, it was just so
it honked once and so the tester heard it.  all plastic part from the 2 tiny
contacts.






>
> Chris
>
> --
> Remove prejudice to reply