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Old 10-21-2003, 08:01 PM   #1
Scooby Specialist
Member#: 17851
Join Date: Apr 2002
2003 WRX
R.I.P. 7.27.2005

Default Of that 3 plug bulb connector, which one is high, and which one is for low beam?

I have an 03 WRX. I'm trying to put HIDs into my STI lights.

I got some ballasts, and a wiring harness from suvlights.

I assume that in that three plug connector that comes on the stock lights, one is for high, one is for low, and the other is a shared ground.

Which wire is for the high, and which is for the low?

thanks guys.
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Old 10-21-2003, 08:07 PM   #2
Trust no one
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
02 WRX
15 WRX/05 GTO


This should help you-

The Subaru headlight system is common positive, switched ground. The wiring of the headlight connectors in the car is as follows-
Driver side- common positive = red/light blue (center terminal on connector)
low beam switched ground = yellow/red
high beam switched ground = red

Passenger side- common positive = light blue/white
low beam switched ground = yellow/red
high beam switched ground = red

I recommend you do not connect the negative side of the ballasts to the switched grounds but ground them directly to either a good chassis ground or the battery negative terminal. You can use the common positive for power.
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