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Old 01-26-2000, 03:19 PM   #1
Bret Jensen
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Question Wire colors

I'm assisting Alex Anastasiou with a set of instructions for installing the Jumptronix meter in an RS. I'm looking for some help with wire colors and would really appreciate any corrections or additional information.
Currently I have the following:

1998 RS - ECU has only one large plug, B84
<u>Ignition Power</u>: B84#2 YELLOW/GREEN, or B84#1 GREEN
<u>O<sub>2</sub> Sensor</u>: B84#23 YELLOW/BLUE
<u>Ground</u>: B84#17 BLACK/RED or B84#16 BLACK

1999 RS - 3-plug ECU. The bottom plug is B134 (blue), the middle plug is B135 (orange) and the top plug is B136 (green).
<u>Ignition Power</u>: B135#7 GREEN/RED
<u>O<sub>2</sub> Sensor (front)</u>: B136#7 YELLOW/BLUE
<u>Ground</u>: unknown but not B136#20 (black), might be B134#35 (black) or B134#27 (black).

2000 RS - 3 plug ECU a la '99
<u>Ignition Power</u>: B135#7 GREEN/RED?
<u>O<sub>2</sub> Sensor (rear)</u>: B136#18 color unknown
<u>Ground</u>: unclear but probably B136#16 [color unknown but might be light green]


[This message has been edited by Bret Jensen (edited February 01, 2000).]
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Old 01-26-2000, 03:42 PM   #2
ownly
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Member#: 623
Join Date: Dec 1999
Location: Dorkland NZ / MTL, Qc, Can
Vehicle:
2000 WRX STi 6 wagon
Mellow Yellow

Question

whooaaa, now i'm confused
i thought the 2000 was

Ipower (b135) #7 RED

i read this while doing a search here



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Old 01-26-2000, 03:48 PM   #3
SteveS
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Member#: 6
Join Date: Jun 1999
Location: South Jersey
Vehicle:
2007 BMW Z4 M Coupe
Interlagos Blue

Post

FWIW, when I installed the Jumptronix in my MY98, I had to ground the unit to one of the bolts holding down the ECU and cover plate. I originally hooked it into one of the ground wires, but it seems to be sensitive to any type of noise/interference. Once I hooked it to the bolt, no problems since.

SteveS
http://www.lagging.com
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Old 01-27-2000, 06:54 AM   #4
SKiDaZZLe
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Join Date: Jun 1999
Location: Dallas, TX
Post

On my 99, i spliced the jumptronix ground into my sfc ground which is grounded to the bolt in front of the SRS computer.

michael
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Old 01-28-2000, 03:59 PM   #5
Bret Jensen
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Ownly - would it be too much to ask you to expose your ECU and check? I would appreciate it very much if you could verify the colors on both the ignition and O2 lead.

I wish Rao would weigh in here.
 
Old 01-28-2000, 10:12 PM   #6
ownly
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Join Date: Dec 1999
Location: Dorkland NZ / MTL, Qc, Can
Vehicle:
2000 WRX STi 6 wagon
Mellow Yellow

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i will since i need to install my fuel controller, i just got my car back BTW and that JC cat-back is sweet as hell and on a 2000 with and open intake i'm not even running lean vival el MAP sensor ...

O..
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Old 01-29-2000, 02:52 AM   #7
delectron
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Location: Pleasant Hill, CA, USA
Post

Bret: for the MY99 the grounding wire is B134 #35 or (same plug) #23. I don't remember which actually, heh, but it was black.
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Old 01-29-2000, 01:38 PM   #8
Bret Jensen
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delectron - B134#35 is the ground for the front O<sub>2</sub> sensor heater, right? I wondered if that same ground was used for the open-loop circuit, but I decided against it since it seemed to me that that might make the car run oddly when the O<sub>2</sub> sensor heater was on. What is B134#23?
 
Old 01-31-2000, 05:43 AM   #9
HRE | giulio
Former Vendor
 
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Join Date: Nov 1999
Location: NY USA
Post

On my 98 power is pin#2 (only), color=Yellow w/ green stripe. Car's DOB: 11/97

g
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Old 01-31-2000, 10:30 AM   #10
HRE | giulio
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Join Date: Nov 1999
Location: NY USA
Post

I used pin 17 for ground. I had a line tester to check it. That's how i found the rpm on my 98 too- it's blue on mine, not red. but the pin locs were all the same.
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Old 01-31-2000, 01:02 PM   #11
SteveS
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Member#: 6
Join Date: Jun 1999
Location: South Jersey
Vehicle:
2007 BMW Z4 M Coupe
Interlagos Blue

Post

I just uninstalled my Field SFC and installed the Apexi S-AFC in my MY98. Don't get hung up on wire colors -- use the diagram. FWIW, on my 4/98 RS, I used the ignition power (1G) to supply power to the AFC (wire #85). 16 and 17 are grounds, and both are black with red stripe.

Thanks for all who helped with the TPS (wire #5) on the 98! It's all working.
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Old 02-01-2000, 09:06 AM   #12
Bret Jensen
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Steve - your comments noted above. Are you selling your SFC (Hyper R?) ? If so please e-mail me (bjensen@stat.uiowa.edu).

Ownly - how is your install coming?

Giulio - I have a nice digital voltmeter but I'm not very good at using it - how can I determine the grounds? When I try to test for grounds all the wires look like they have continuity to the chassis. It was easier with my old cheapo analog meter.
 
Old 09-17-2000, 10:27 AM   #13
2yLiTe
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Member#: 660
Join Date: Dec 1999
Location: Windsor, Ontario CANADA
Post

I installed my SAFC as per the instructions for "American Market Vehicles" that came with the unit.
In their diagram they say to use 94 as ground. On my (MY98) I tried using 16 (of 16 or 17) first and it didn't work. Are there that many differences within the same model year? Needless to say, I'm (apparently) functional with the Brown and Black wires tapped into #94. Has anyone else noticed this?
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