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How to wire the horn through the washer push
richwill - 12/2/09 at 01:03 PM

As the title says i am looking at wiring the horn through the wiper push on the stalk end on a sierra column . Does anyone have a diagram or could someone describe the corrrect way to do it.


Mr Whippy - 12/2/09 at 01:11 PM

you need a relay as the current draw is much higher


yellow melos - 12/2/09 at 01:19 PM

I am sure you have a reason for this... But why ???


Just out of interest..

and to answer your question...

Earth wire from the washer pump to a relay that powers the horn.


nick205 - 12/2/09 at 01:34 PM

quote:
Originally posted by yellow melos
I am sure you have a reason for this... But why ???


Just out of interest..

and to answer your question...

Earth wire from the washer pump to a relay that powers the horn.



It avoids the need to wire the horn into a steering wheel centre push on an aftermarket steering wheel or the need for a seperate button on the dash.

If using Sierra stalks and not fitting a screen/wipers the stalk is redundant so it also saves having to cut the stalk off.

As above, you need to wire the horn via a relay due the current draw.


splitrivet - 12/2/09 at 01:34 PM

I did it also put my rear fogs on the wiper stalk but cant remember the exact wiring. I'll u2u you with it when I get home if no one comes up with the answer before then.
Cheers,
Bob


BenB - 12/2/09 at 03:42 PM

If you look on the back of the stalks the terminals have numbers. Pressing the washer button closes the contact between Rs53C and Rs54.

Either you need a relay or you need to rely on the fact that the contacts might burn out eventually and you'll need to fit new stalks. Considering how often I use my horn I'd happily fit it sans relay. The Sierra stalks are quite resiliant- just look at the wiring diagram how many of the lighting circuits don't have relays......


Paul (Notts) - 12/2/09 at 07:04 PM

My air horns are wired throught the wiper push switch also.. just use the switch to power a realy.

Plan to use the other wiper functions to launch the anti tank missile system when I get round to fitting it.

Paul