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Old 11-05-2003, 07:06 AM   #1
Scooby Specialist
Member#: 30246
Join Date: Nov 2002
0394 WRX/Supra

Question DIY IC SPray wiring help

I wired the IC spray as fallows...

Power from battery to power on switch with (Inline fuse 30amp)
Then i did the neg batter terminal to the neg. on the washer pump..

then the power to the washer pump to the Accesory point on the switch..

then the ground from the switch to the bolt on the side of the car when the steering coloum pannel is dropped down..

My question is once i had this all set up and i flicked the switch the Fuse blew.. Is this because its only a 30 amp fuse? And the switch is 12v 32amp?

Does my wiring instructions sound right, and do you think i need a higher amp fuse, if so which one?
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Old 11-06-2003, 09:26 PM   #2
Scooby Guru
Member#: 11312
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: ghettoville, PA
2009 Gray
Legacy 2.5i


what type of motor are you running to pump the fluid? just the washer fluid motor?
that shouldnt draw more than 15 amps MAX.
check your wiring..you migt have a bad wire somewhere or a short to ground.

its best to use a relay to control things like this..what gauge wire are you using? i'd rather not have a 14awg wire run into my car with 30 amps running thru it, id only have a wire controlling hte low current side of the relay..and drawing power right from the ON position on your ignition cylinder..

try getting rid of the ground on the switch, the only thing it is for is to light the switch(if it is even a lit switch)..but it could be bad..and shorting the power right to ground.

also, its best to test how some switches work.. i know with some you can use the ground as the feed to the device being controlled..and the ACCY not used. power goes in one side..when you flip the switch, it gores thru to feed the device..which i grounded all the time. its usually a better idea to control the ground side though. rarely will i use a switch to cotrol power.

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Old 11-30-2003, 01:07 PM   #3
Scooby Specialist
Member#: 42900
Join Date: Sep 2003
Chapter/Region: SCIC

this is what i did with mine...i spliced into the positive wire on the windshield washer pump...ran that to my nifty switch and then on the other terminal of the switch I ran it to the positive wire on my other pump and then just ran the ground wire to chassis ground. It's much simpler than running straight off the battery cause it's already fused and the IC sprayer can be used only when the key is in the ignition turned to on, just like your windshield washer sprayers. Make sure you have primary wire...a switch that can handle the voltage/current and a pump that can handle the same. Or u might fry something. Also check for shorts to ground in your system with a multimeter before u try out your sprayers.
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