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Old 09-02-2007, 01:41 PM   #1
Scooby Guru
Member#: 31511
Join Date: Jan 2003
Chapter/Region: SCIC
Location: Carlsbad, Ca.
03 GD2 95 GM4

Question How to test HID Ballast or Bulbs?

I recently ran into a problem with HID lights that have been working for the last three years without fail. I had some Brightstar HID retrofits. They had been working fine, but one night the driver's side light went dead and then in the morning the passenger side went dead.

I dug around in my spares box and installed another kit (bulbs and ballasts) from another manufacturer (they look like Philips units), I just hooked them into the existing harness as they had the same connector for power but not for the bulbs.

I was wondering what was the best way to go about testing the dead kit to findo out what was actually broken, the bulbs or the ballasts?

Thank for any help with this,
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Old 09-02-2007, 01:59 PM   #2
Scooby Guru
Member#: 137398
Join Date: Jan 2007
Chapter/Region: E. Canada
Location: Toronto
2004 Impreza


Try the supposedly "dead" bulb in the other headlight and try the working bulb on the "dead" ballast.

If the dead bulb lit up on the working ballast then the other ballast failed. If the working bulb lit up on the supposedly dead ballast then it's the bulb.
EdHilario is offline   Reply With Quote

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