Vehicle Wiring Details for a
1999 Subaru Impreza Outback
Item Wire Color Polarity Wire Location
12V white Positive (+) steering column
Starter white/black Positive (+) steering column
Starter 2 none
Ignition green Positive (+) steering column
2nd Ignition none
3rd Ignition none
Accessory yellow Positive (+) steering column
Accessory 2 none
Tachometer blue ignition coil or [1]
Power Door (Lock)
Wiring Diagram for
[Negative (-)] Door Lock
blue/green Negative (-) drivers kick panel
Power Door (Unlock)
Wiring Diagram for
[Negative (-)] Door Unlock
yellow or yel/red Negative (-) drivers kick panel
Door Trigger yellow Negative (-) any passenger pin switch
Dome Supervision
Wiring Diagram for
[] Dome
use door trigger
Headlights green or grn/red Negative (-) headlight switch
Parklight Positive red/yellow Positive (+) drivers kick panel
Parklight Negative black/white Negative (-) headlight switch
Wipers blk/blu(L),red/blu(H Positive (+) steering column
Left Front Window
blue - blu/red drivers door switch
Right Front Window
blk/blu - red/grn drivers switch or kick panel
Left Rear Window
grn/yel - grn/blk A drivers switch or kick panel
Right Rear Window
blu/wht - grn/wht A drivers switch or kick panel
Trunk/Hatch Pin tied in with doors
Hood Pin none
Trunk/Hatch Release
Wiring Diagram for
[] Trunk/Hatch
Factory Alarm
Factory Alarm
Horn red/green Negative (-) steering column
Brake white/black Positive (+) at brake switch
Door Motor
none none none
Door Motor
none none none
Disarm none none none
Disarm No Unlock none none none
Additional Info:
[1] Also found at ECM behind passenger side of the dash. Tach is blue/green in a 35 pin plug, pin 30. VSS is green/yellow is in a 28 pin plug, pin 24.

ATTENTION: This wiring information is being provided free of charge and on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it by using a digital multimeter. GNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance upon this information.

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