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Discussion Starter · #1 ·
I'll try and walk you through installing one version of IC spray system. First I need to acknowledge my friend Steve (300Z TT!) who w/o his electrical knowledge I'd still be staring at the pretty parts.

First parts need for this particular install. I used a dual pump washer bottle (one pump to run the windshield wiper fluid) the other for the IC sprayer. These are oem on the WRX wagon as well as other Subaru models- you may be able to find one used. Next you need some washer hose- sold in 6' lengths at almost all car parts stores. You will also need nozzles- I used the oem STi nozzle (mine only utilizes one as it is a RA splitter). You need a switch- I used a STi oem switch- the manual one. You also need some wire and four female spade ends to fit the spade ends on the switch. They are small and may be difficult to find- I found mine at a Chevy dealership looking through boxes of connectors.

First you need to remove the old washer bottle, two 10mm bolt heads, the plugh in to the washer pump and remove the hose leading ut of the unit- fluid will come out after you remove the hose.

You can mount the new one in, reconnect the washer line and add your own hose to the second pump. You'll see there is a second plug in already there for the second pump. Note the colors of the wires- yellow/black and green/red on the washer pump plug and blue/black and white/orange on the 2nd plug.
 

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Discussion Starter · #2 ·
What we'll be doing is cutting the blue/black wire and splicing it into the yellow/black on the washer plug. In addition we'll be cutting the white/green and adding wire to it- sufficient enough to run into the cab via the gromett on the drivers side floor.

Here's a rough outline of what we'll be doing:
 

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Discussion Starter · #3 ·
cutting the blue/black wire, you can also see the white/green cut w/ added wire (that one gets routed into the cabin). All connections were soldered and taped.
 

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Discussion Starter · #5 ·
We need two ground wires, this is what we did:
 

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Discussion Starter · #6 ·
We also want the switch to be lit when the headlights are on, so we tap the viloet wire in the next switch over - the cruise switch. We cut a splice into the violet wire and a add a short length of wire to it. Add a spade connector and it will go on the back of the switch as diagramed above.
 

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Discussion Starter · #8 ·
here's ablurry pic of where we grounded the two ground wires- behind bolt head:
 

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Discussion Starter · #9 ·
Pic of the wire that we ran in from the engine bay (the white/green wire). Also can see the wire we added (spliced into) the violet wire:
 

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Discussion Starter · #10 ·
Next we install the switch into the blank and refering to the diagram hook up the wire from the engine bay (originally the white/green) to manual trigger position, the wire that is spliced into the viloet wire, and the two ground wires:
 

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Discussion Starter · #11 ·
Mount your nozzle(s) -there are already oem cutouts for the nozzles on the STi splitter. Make sure you face them the right direction. Steve gave me a good blast in the face on a test:D .

Pic of nozzle:
 

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Discussion Starter · #12 ·
I just routed the hose paralell to the existing hose- like so:
 

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Discussion Starter · #13 ·
Pic w/ switch installed. Now when you need a little cool down, just give the button a push- it will mist as long as the button is held in.
 

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Discussion Starter · #16 ·
Rallispec sells the switch

The harness plug (if your talking at the washer bottle) is already there- unused (unless you have a wagon).
 

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Thanks for the info, I meant the white plug that plugs into the back of the switch, does it also come with that?

-Dave
 

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The white part is part of the switch you don't get the other side (harness) it is part of the OEM STi cluster harness.
You have to use small wire connectors to wire the switch.

If you don't have an STi splitter do what I did.
Home Depot has the nozzles called "Pot & Basket Misters" they are as good as you are gonna get from there (trust me I tried several), get them.
Your stock WRX scoop seal (rubber part hanging down) is held on by little button type clips, take the two front top ones out, drill just a tiny bit to widen the hole, and put the elbow that came with the "Pot and Basket Misters" through those now widened holes. Attach the misters to the inside (duh) and the water supply hose to the out side of the elbow, aim the misters and have spraying fun!
Note: if you drill correctly the clips will still go back in if you remove the water spray system.
 

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Discussion Starter · #20 ·
dudical26 said:
what size spade connectors did u use.....do u have a link where i can get them.



Thanks
I got my by luck. I tried our local radio shack and they didn't have anything (it's a small one). I went to a local Chevy dealership and we went through several boxes of connectors and I found four that fit, but no part # unfortunately.
 
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