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Old 02-09-2005, 04:43 PM   #1
Scooby Newbie
Member#: 62747
Join Date: May 2004
1998 Impreza L

Impreza GC8 Super Multiple Junction?

Does anybody know about the Super Multiple junction?
I got A wiring harness and It is not included in it....a few questions.....should It have come with the harness? can I find another one anywhere(dealership?)
from what I understand It is a critical piece of my swap wiring.......any Ideas
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Last edited by ride4fun05; 02-09-2005 at 07:52 PM.
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Old 02-09-2005, 06:02 PM   #2
Matt Monson
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
99 2.5RS, '85 911
'73 914 and 2012 BRZ


What harness did you get? My 1994 WRX harness didn't have one. It is not required as long as your pinouts hit the right place on the ECU...
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Old 02-09-2005, 07:35 PM   #3
Scooby Guru
Member#: 8343
Join Date: Jul 2001
Chapter/Region: MWSOC
Location: Atlanta, GA
2005 2012 Jeep
2013 DGM BRZ


Is it a harness from a new age WRX? The SMJ connects part of the ECU harness to the bulkhead harness that goes to the engine bay to the engine harness on the side by the battery. I think it has 40 or so pins and most of the non-shielded sensors and whatnot go through it. If you don't have it, it seems like it'd be awful lot of extra wiring work. Instead of just plugging that in, you are looking at connecting 40 wires manually...

Looks like this, courtesy of SCC's swap writeup:

Last edited by dwx; 02-09-2005 at 07:44 PM.
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Old 02-10-2005, 12:54 PM   #4
Scooby Newbie
Member#: 26067
Join Date: Oct 2002
Chapter/Region: SWIC
Location: Tucson, AZ
2012 Jetta


You can do the swap relativly easily as ling as you have the engine connectors and ECU connectors. Just more wiring and need of proper diagrams
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