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Old 03-25-2012, 08:56 PM   #1
alx8283
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Member#: 225024
Join Date: Sep 2009
Location: San Diego, CA, USA, Earth, ...
Vehicle:
2002 wrx
PSM

Default IC spray wiring

im planning on adding an IC spray to my 2002 wrx.
I will use a pressure activated switch with a common, normally open, and normally closed.
there will be a manual spray switch in the car.
i would also like to add in an led as an indicator when the pump is running.
im going to use the washer pump to spray the ic.


the pressure switch has this info written on it, in this order:
15.1A 1/2 hp 125, 250, 277 VAC
1/2A 125 VDC; 1/4A 250 VDC
L215 5A 125 VAC L

what im most unsure of is how and where to protect this circuit.Update: Product website says 10Amp
from the print on the switch, i think i should use a 1/2Amp inline fuse between the battery and the pressure switch. is this correct? if not, how do i determine where and how much protection is needed? i dont know the draw from the pump but its a standard subaru rear window washer pump.

here's my thought as a drawing:

Thanks!


Last edited by alx8283; 06-21-2012 at 11:24 AM. Reason: added a relay because i learned something
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Old 03-26-2012, 01:15 PM   #2
Noah
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Location: Chicago area
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05 WRX
03 SV650S

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The pump will determine how much current is being drawn. You'll to wire the switches in parallel so that when either switch activates it will turn the pump on. On my setup I used a relay, but here is a basic layout.

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Old 03-26-2012, 08:55 PM   #3
alx8283
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2002 wrx
PSM

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Thanks Noah!
If anyone has some input please post.
Additionally, if anyone reading this has any Subaru wagon/forester, please pm me the year and model with the fuse size for your rear washer pump. I've been searching, but with limited time any help is greatly appreciated!

Thanks,

Alex
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Old 08-20-2012, 08:46 PM   #4
4Flat4Life
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PSM

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I would fudging love to do this!!
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Old 08-21-2012, 01:05 AM   #5
hybrid gti 2
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Nice. I was actually thinking of temperature controlled sprayer setup for my car. Yet I keep looking at this setup.
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Old 08-21-2012, 10:50 AM   #6
alx8283
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Temp would be nice, but the pressure switch was only ~$13.






On a side note, I finished pnp'ing that vf30
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Old 08-21-2012, 04:44 PM   #7
hybrid gti 2
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silver and cf

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12v temp controller can be found for cheap.
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Old 08-22-2012, 12:05 PM   #8
NitroTrike
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As soon as you get stuck in traffic it will empty the tank lol
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Old 08-23-2012, 03:37 PM   #9
hybrid gti 2
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silver and cf

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That's what the on off switch is for
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