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Old 07-30-2012, 05:53 PM   #1
Rizzo314
Scooby Specialist
 
Member#: 42215
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Indianapolis
Vehicle:
2002 WRX being built
and going for 10s :evil:

Default How To: Super Easy 4HI or "All On Headlights" for 02/03 w/ JDM STi lights.

I have a 2002 WRX with JDM STi headlights. I am going to be retrofitting them with bi-xenon HID projectors, and obviously want the HIDs to stay lit when the brights are on. I saw another method where the harness for the HIDs also allows the LOWs/HIs to be on at the same time, but I wanted a more independent system. (I like my 4HI and headlight harnesses to be separate.) This method will also work well for those with non-HID STi headlights, wanting to run both LOW/HI at the same time.

I compared the 04 WRX wiring diagram to the 02 WRX diagram, and this is the only difference I found that allowed both sets of lights to be on.

What to do:
-Remove your glove box.
-If you wish to disable your DRLs, now would be a good time to unplug your DRL Control Module.
-Find the Yellow w/ Green wire coming out of the Black relay.
-Cut the wire, leaving enough length from the relay socket to add an additional length of wire.
-Attach a piece of wire, approximately 5-6 inches long, to the cut wire. Crimp a ring terminal to the other end.
-Remove the nut that holds the relay bracket to the dash support and slide the ring terminal over the stud. Replace and tighten the nut.
-Turn your key on and check the function of the headlights.
-Re-install your glove box.

I prefer to solder all of my connections, but you may find a simple butt splice to be a viable solution for this application.

Here is a completed shot. You can see the non-relay side of the YG wire has been capped with heat shrink to prevent it from making contact with anything else (probably not an issue, but I like to play it safe).

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Last edited by Rizzo314; 08-02-2012 at 04:45 PM.
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Old 07-30-2012, 06:10 PM   #2
Rizzo314
Scooby Specialist
 
Member#: 42215
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Indianapolis
Vehicle:
2002 WRX being built
and going for 10s :evil:

Default

Looking at the diagram for an 04 WRX, it looks like it can be done a lot easier. I am going to re-write my OP.

Last edited by Rizzo314; 07-30-2012 at 06:35 PM.
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Old 08-02-2012, 04:46 PM   #3
Rizzo314
Scooby Specialist
 
Member#: 42215
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Indianapolis
Vehicle:
2002 WRX being built
and going for 10s :evil:

Default

Added a photo.
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