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Old 02-11-2006, 01:42 PM
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Default Auto STi I/C Water Spray

Hey all,

Quick question - I want to turn my manual I/C factory water spray into an "Auto" waterspray. I understand that you can fit a Hobbs switch in order to get it to activate at say, 12psi for example....however, how do I go about integrating this into the factory set up?

I've searched Rexnet/Nasioc etc and haven't had much luck

Any advice much appreciated.

-D
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Old 02-11-2006, 01:51 PM
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hobbs switch gets teed off on of the boost lines and then you hook up the hobbs switch in parallel with the manual in cabin switch.
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Old 02-11-2006, 02:10 PM
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Awesome!

Just what I'm after.

Thanks man!
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Old 02-11-2006, 05:08 PM
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Quote:
Originally Posted by [BANNED]
Awesome!

Just what I'm after.

Thanks man!
you can go guinnea pig, let me know it goes orrite!
you'd go through water like no tomorrow i'd imagine.
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Old 02-11-2006, 05:13 PM
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^^^^
easy solution... spec-c water tank... mounts behind the rear seats... a glorious 12L of H2o for your ride i have an auto i/c switch coming in from japan... ill just need a hobbs switch and wire to suit.. ill let you know how i go in a week!!


slight off topic... who sells hobbs switches in perth? conventry's ?
part number... anyone ??

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Old 02-11-2006, 05:15 PM
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I suppose that withe the manual switch (given that its on and off, not on when held down and off when released) you will be able to switch it off completely. Otherwise, get a three position switch, one for manual, one for auto and an off.

Have this running in my car using the wagon bottle under the bonnet, existing wires as the loom is the same between wagon and sedan and just two wires running from the hobbs to the switch. Works a treat. At 8psi, you get two weeks from it.

I think there is a link with a wiring diagram, follow that and it's piss easy. just t-piece it off.

Water spray lovin.

One question, are you running front mount? if so you may find that it will leak constantly.
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Old 02-11-2006, 07:45 PM
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Here you go:-

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Old 02-11-2006, 10:54 PM
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Quote:
Originally Posted by muggz

slight off topic... who sells hobbs switches in perth? conventry's ?
part number... anyone ??


Coventrys sell them, well at least that's where I bought mine 3 years ago.

Instead of converting the Manual switch to an Auto, why not purchase a seperate Auto switch, and have both of them like I did? Manual mode is handy for MCs, drags while you're waiting in line for your turn and temps are just going up.

I had an 8psi Hobbs switch too, each bottle lasts around 3 weeks. Just put some water in each time you fill up at the servo, no sweat.
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Old 02-11-2006, 11:00 PM
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A diagram I drew up when I was doing mine, if you're using a TMIC and washer bottle.

If you're using a boot mounted reservoir and/or FMIC, you'll need to use a one-way valve like in Wilmo's diagram.

Last edited by scoobysix; 02-11-2006 at 11:03 PM.
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Old 03-11-2006, 08:40 AM
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RMS sell the hobbs switches as well
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