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This is a collection of wiring diagrams and ECU pinouts I have been given or have come across. I have gathered them here as one easy reference page to look at when you need wiring help. If you have any questions or would like to submit a diagram, please feel free to email me.

Click For Link File and Description
Apexi ITC

The Subaru section of the English install/owner's manual for the Apexi ITC.

PLEASE NOTE: I do not have any other pages of the manual than these- please do not ask me for them.
Link Install/User's Guide

The install/owner's manual for the WRX Version 5 Link Aftermarket ECU.
UK300 Headlamps

How to wire your Prodrive UK300 Headlamps to the stock US WRX headlamp wiring harness.
Rear Fog Lamp

Wiring Diagram for the Subaru Rear Fog lamps as found on European and Australian Imprezas.
Rear Fog Lamp Switch

Wiring Diagram for the Subaru Rear Fog Switch pinouts.
Intelliguard 7000

Installation/wiring manual for the Clifford G4 Intelliguard 7000 series alarm system.
Intellistart 4

Installation/wiring guide for the Clifford G4 Intellistart 4 remote starter module.
Engine Diagnostics

PDF file on engine diagnostics.
1991 Legacy Electrical Schematics

Wiring Diagram for the 1991 Legacy.
Impreza Wiring Diagram

Wiring Diagram convering most sections of the Impreza.
1993 to 2001 Impreza Radio Pinouts

Wiring Harness Pinouts on the main body radio harness for 1995 to 2001 Imprezas.
2002+ Impreza Radio Pinouts

Wiring Harness Pinouts on the main body radio harness for 2002 Imprezas.
2002+ Impreza Subwoofer Pinouts

Wiring Harness Pinouts on the main body radio harness for 2002+ Impreza subwoofers. This may or may not apply to Legacy and Forester Models as well.
WRX Dash

Wiring Diagram for the 1994 to 1996 Impreza WRX instrument cluster.
MY 1993

ECU Pinouts for the 1993 Impreza 1.8 Engine (Two Pages)
MY 1995-1996 v3 And v4 STi

ECU Pinouts for the 1995-1996 STi Versions 3 and 4 (Four Pages)
MY 1996 WRX

ECU Pinouts for the 1996 WRX (2 Pages)
MY 1997

ECU Pinouts for the 1997 Impreza 2.2 Engine (Four Pages)
MY 1998

ECU Pinouts for the 1998 Impreza RS (Seven Pages)
MY 1999

ECU Pinouts for the 1999 Impreza RS (Four Pages)
MY 2000

ECU Pinouts for the 2000 Impreza RS (Three Pages)
MY 2000 SAFC Install

ECU Pinouts for installation of an Apexi S-AFC in the 2000 Impreza RS
MY 2001-2003 RS

ECU Pinouts for the 2001 to 2003 Impreza RS (Three Pages)
MY 2002 and 2003 WRX

ECU Pinouts for the US Specification 2002-2003 Impreza WRX
MY 2004 SOHC ECU Pinouts

ECU Pinouts for the US Specification 2004 Impreza RS
MY 2004 DOHC ECU Pinouts

ECU Pinouts for the US Specification 2004 Impreza WRX
MY 2004 STi ECU Pinouts

ECU Pinouts for the US Specification 2004 Impreza WRX-STi
MY 2004 Basic Diagnostics

Basic Diagnostics section of the 2004 US Specification Impreza Service Manual
MY 2004 DCCD

Driver Controlled Center Differential section of the 2004 US Specification Impreza Service Manual
MY 2004 DTC

Diagnostic Trouble Codes section of the 2004 US Specification Impreza Service Manual
MY 2004 DTC Criteria

DTC Criteria section of the 2004 US Specification Impreza Service Manual
MY 2004 Engine Electrical

Engine Electrical section of the 2004 US Specification Impreza Service Manual
MY 2005 2.5 Impreza SOHC ECU Pinouts

ECU pinouts for the 2005 2.5L NA SOHC engine
MY 2005 2.0 Impreza DOHC ECU Pinouts

ECU pinouts for the 2005 2.0L Turbo DOHC engine
MY 2005 DOHC Impreza STi ECU Pinouts

ECU pinouts for the 2005 2.5L Turbo DOHC engine
MY 2005 2.5 Forester SOHC ECU Pinouts

ECU pinouts for the 2005 2.5L Forester NA SOHC engine
MY 2005 2.5 Forester DOHC ECU Pinouts

ECU pinouts for the 2005 2.5L Forester Turbo DOHC engine


Standard Disclaimer: Modification of your car involves risks and may void your warranty. I can not be held responsible for the modifications you consciously decide to undertake nor for the results of doing so.



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