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Old 04-11-2021, 01:39 PM   #1
Rejuniwa
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Member#: 520175
Join Date: Nov 2020
Default Weird headlight issue

I've ran into a really weird issue with my lights on my 05 Legacy GT. I currently have my fogs and Low beams converted to HID. The DLR relay has been pulled (white plug, however this was done by previous owner). The other day I was driving back from the gym when all my lights flashed off.I flicked them off and then back on. My PS low beam since won't turn on, along with my PS high beam and my fog (not always). Additionally, the dash light for the brights and the fog dash light don't turn on (fogs only when they're not working). When I turn my low beams on, the PS flickers for a second and then dies.

At the time, I had a corroded negative battery terminal connector (since been fixed) so i figured it was an issue with that. I replaced the connector and still had the same issue. I tried replacing all related fuses and completely replaced low beam HID kit. All bulbs have been tested and work. My PS low beam is getting 12.8 V at the last point before the HID kit, but my PS high beam was getting no voltage.

Does anybody have an idea of what's causing this issue?
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Old 04-12-2021, 04:08 AM   #2
Cougar4
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Member#: 53443
Join Date: Jan 2004
Location: Anchorage, AK
Vehicle:
2001 LL Bean Outback
Winestone

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If the ground to the low beam lamp is good then I would have to say the ballast transformer is bad. Once that issue is corrected hopefully the HI beam light will work again also.
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Old 04-12-2021, 05:10 PM   #3
Rejuniwa
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Default

Quote:
Originally Posted by Cougar4 View Post
If the ground to the low beam lamp is good then I would have to say the ballast transformer is bad. Once that issue is corrected hopefully the HI beam light will work again also.
That was my first thought, but I tried swapping out all components of the HID kit and nothing changed.
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Old 04-27-2021, 12:17 PM   #4
Cougar4
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Join Date: Jan 2004
Location: Anchorage, AK
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2001 LL Bean Outback
Winestone

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Check the power source connection that ties to the PS high beam and make sure power is getting to that point. If that is good then the break is somewhere in the wire that supplies power to the light.
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Old 04-28-2021, 10:46 AM   #5
satrya
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Join Date: Apr 2001
Chapter/Region: BAIC
Location: Fremont, CA USA
Vehicle:
2002 GDAA (bugeye)
797 (blaze yellow)

Default

Checking for wiring connectivity can be difficult. See if you can test the following. With the OE switch set to low beam, open the engine hood cover and carefully nudge some of the base of cables going to the grounding point and connectors. By connector I mean the OE connector that would normally go to one of the headlights to power the halogen low beams (which is now connected to the wiring harness), the connector from the wiring harness to the ballast, the connector from the ballast to the igniter, and the connector from the igniter to the bulb.

I've encountered issues where the wiring harness' connection to the OE connector is intermittent, so if I pull it with my hands to test for resistance, it looks ok, but as I place it back, pulling the wire one way may break the connection.

Once you find the offending culprit, check to see if the pin and connector pair is a bit loose and look for signs of oxidation or any deposits. After cleaning it, make sure the wire doesn't have too much tension.
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