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Old 03-20-2004, 11:13 AM   #1
tux
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Default sti gauge low i/c fluids indicator

anyone know what is entailed in hooking up the USDM STI intercooler sprayer into wrx w/ sti gauge cluster so that the low i/c lamp comes on? is it as simple as wiring it in, or is there a resistor that has to be installed? From the looks of the schematic there should be a resistor?

i may be wrong tho. so anyone w/ info
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Old 03-23-2004, 09:03 PM   #2
tux
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guess i'll try it just hooked up and see when i get the tank in
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Old 03-24-2004, 11:50 AM   #3
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You may have to run wiring from the sensor in the tank to the cluster because the WRX wiring harness probably does not have that wiring in it.
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Old 03-24-2004, 08:41 PM   #4
tux
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ya unfortunately i check and couldn't find anything
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Old 07-04-2004, 03:00 AM   #5
MK19_
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I am working on this as we speak... I found that the #5 pin on the B connector is the I/C spray LED. I just need to figure out how it is wired up from here
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Old 07-06-2004, 01:55 AM   #6
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Anyone??? I am at a standstill here...
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Old 07-11-2004, 07:20 PM   #7
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????????
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Old 07-12-2004, 06:59 PM   #8
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Question Diagram- what is this?

OK, I found this- can anyone decipher what is inline inbetween the B5 connection and the level warning switch at the tank??


Last edited by MK19_; 07-12-2004 at 07:08 PM.
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Old 07-12-2004, 07:15 PM   #9
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It looks as if the green wire goes directly to the B5 connector and the black wire directly to chassis ground- the connectors inline appear to be the actual connectors- which my US WRX harness doesn't have. Anyone have comments on this? I am headed out to see if I can get it working...
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Old 07-12-2004, 08:04 PM   #10
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PWN3D Fuschnicaas...

Well- no go again. I hope someone can nail this down and soon.
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Old 07-13-2004, 07:44 AM   #11
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The original picture that was here was wrong, I changed it, and it is now correct.

Here is the schematic for the USDM STi cluster.

When I wired in the low level light for it, all I had to do was add a pin to B5 and run the wire from the sensor to it.



Nick

Last edited by Rizzo314; 07-14-2004 at 05:48 PM.
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Old 07-13-2004, 10:56 AM   #12
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looks like a current limiting resistor in series with a LED. leds don't use 12v, or even 5v, so the resistor drops some of the extra voltage so that the led doesn't burn out. you can determine the value by knowing the voltage drop of the led and the supply voltage which will be impressed across it.

ken
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Old 07-14-2004, 01:13 PM   #13
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the sti gauge is electro luminecent. i believe it'd run off a different voltage than an led anyways... but i'm probably wrong?
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Old 07-14-2004, 05:48 PM   #14
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Well, apparently, I uploaded the wrong schematic. That one is for the WRX. I changed it to the correct one.

I wired the sensor into the cluster without any problems. I just put a pin in B5, ran it to the sensor, grounded the sensor and it worked.

He has a Prodrive cluster, and it might be different.

Nick
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Old 07-14-2004, 06:36 PM   #15
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hrm now once this is straightened out, next is to find how to wire a rear dif temp sensor to the wrx dif
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Old 07-14-2004, 06:41 PM   #16
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I need to get my car back up and running, and when I do I am going to try to use the stock temp sensor out of an STi diff and wire it into the gauge cluster. It should turn off the light, and turn on the light if the rear diff gets too hot.

Nick
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Old 07-15-2004, 06:10 AM   #17
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Rats, I knew it was wired up right? Is there any way to test that LED to see if it is bad? If it i, how would I go about replacing it? Hmmm... me and electrical in this car just aren't playin too well here as of late (AVCS, this... )
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Old 07-15-2004, 07:05 AM   #18
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Maybe it is the low level sensor? Find a spare 12 volt bulb and wire it in instead of the cluster to see if it comes on.

Nick
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Old 07-15-2004, 07:06 AM   #19
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Shouldn't the LED light up if I take B5 and run it straight to ground? Would that work for a test?
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Old 07-15-2004, 07:08 AM   #20
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Hmm, I guess so. But I would try the sensor as well.

Nick
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Old 07-15-2004, 07:16 AM   #21
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Quote:
Originally posted by MustangKilla
Shouldn't the LED light up if I take B5 and run it straight to ground? Would that work for a test?
Rats... no LED action going directly to ground. I need to make sure the pin I put in is seated all the way (should be)... and triple check that I am in B5.
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Old 07-15-2004, 08:57 AM   #22
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mustangkilla, are you using the usdm v8 sti cluster or the jdm v7?
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Old 07-15-2004, 06:42 PM   #23
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Quote:
Originally posted by tux
mustangkilla, are you using the usdm v8 sti cluster or the jdm v7?
Prodrive STi cluster- the one in MPH
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Old 07-15-2004, 07:06 PM   #24
tux
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oh is it el also or is it led?
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Old 07-15-2004, 09:38 PM   #25
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It is an LED- no bulb, I already checked.
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