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Old 06-28-2025, 07:31 PM
Tarl Tarl is offline
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Join Date: Apr 2001
Location: Boston, MA
Posts: 186
Default LED headlight bulbs confusion

Hi,

Looking to upgrade my headlights to use removable LED bulbs. Already picked out the housings and trying to figure out what model bulbs I need (not really concerned with brand at the moment).

Since the original system has 3 pin low beams and 2 pin high beams so trying to nail down what model #'s to use for each.

I see H4/9003 a lot in the forums which is 2 prong which makes sense for the high beam, but don't know what to use for the dual low/high beam. Some people mentioned it doesn't matter and to just use the 2 prong but it doesn't make sense to me.

Can anyone share what they have used for removable led headlight bulbs?

Or can I use other model bulbs if I use a converter patch harness from the original headlight connectors to the newer model bulbs.

Appreciate the input!

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1968 Firebird convertible 400/4spd
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