Dick Axtell
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| posted on 10/7/13 at 05:27 PM |
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Horn Wiring
Hello you Electric experts,
Since fitting an IVA-friendly Sierra steering wheel, have had to re-wire the horn temporarily. Originally, it was switched earth type, for use with
centre horn button and steering wheel slip ring arrangement. Now trying to make horn work via screen washer stalk.
With ign off, horn works. Ign on - it doesn't. Wghat have I done wrong? Thought it would be simple to provide switched earth via washer stalk,
but clearly not. Your help and expertise would be welcome.
Work-in-Progress: Changed to Zetec + T9. Still trying!!
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MikeRJ
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| posted on 10/7/13 at 05:31 PM |
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Do any lights etc. glow when you operate the horn? Sounds like you are potentially 'grounding' the horn through the ignition switched
circuit, so with ignition on you have 12v instead of 0v.
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YQUSTA
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| posted on 10/7/13 at 06:15 PM |
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My washer provides 12v, sounds like yours could be the same.
"If in doubt flat out"
Colin McRae
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Dick Axtell
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| posted on 10/7/13 at 07:23 PM |
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Thanks for your thoughts on this hold-up. Search over last year threw up yhis thread :-
http://www.locostbuilders.co.uk/viewthread.php?tid=172748
The suggestion to use a relay sounds interesting. Might look further into that.
Work-in-Progress: Changed to Zetec + T9. Still trying!!
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Barkalarr
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| posted on 10/7/13 at 09:09 PM |
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It is a relay you need - mine was exactly like this - basically the switch can't cope with the required current to make the horn hoot.
Edit : if you need some help wiring up the relay shoot me a u2u and I'll send you a diagram.
[Edited on 10/7/13 by Barkalarr]
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Dick Axtell
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| posted on 10/7/13 at 10:24 PM |
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quote:
Originally posted by Barkalarr
It is a relay you need - mine was exactly like this - basically the switch can't cope with the required current to make the horn hoot.
Edit : if you need some help wiring up the relay shoot me a u2u and I'll send you a diagram.
Thanks. Might well be in contact.
Work-in-Progress: Changed to Zetec + T9. Still trying!!
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renetom
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| posted on 11/7/13 at 06:46 AM |
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horn
Any Use ?
 
Good luck
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Dick Axtell
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| posted on 11/7/13 at 07:35 AM |
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Thanks Renetom. Will add this to diagrams downloaded from the web.
Work-in-Progress: Changed to Zetec + T9. Still trying!!
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snowy2
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| posted on 11/7/13 at 07:59 PM |
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it seems to me that the horn is getting a live and earthing via .....whatever.... and the washer cct is giving a live feed the other way so it
balances out you need to find out which cct is giving the live (washers most likely)
sometimes you are the pigeon, most of the time the statue.
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