aftermarket h4 headlights
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Junior Member
Joined: May 2009
Posts: 6
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From: Valparaiso IN
Car: 1991 Pontiac Firebird
Engine: 5.0 305 TBI E
aftermarket h4 headlights
I purchased a couple aftermarket h4 headlights ( http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT ). I was wondering if anybody has ever converted it to these and if there is any conversion needed. If so if you guys could possibly point me in the right direction.
Supreme Member
Joined: Sep 2002
Posts: 9,192
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: aftermarket h4 headlights
is your friend. There's at least 26 gizbillion threads here about headlight conversions. Banned
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Joined: Jul 1999
Posts: 12,212
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: aftermarket h4 headlights
I've tried those exact H4 4x6 housings in my GTA. They totally sucked & went & bought Sylvania Silverstars the next day!
They make for good housings to cut up & put real projectors in, but that is about it.
They make for good housings to cut up & put real projectors in, but that is about it.
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: aftermarket h4 headlights
The hard part about putting projectors in a Firebird, is clearance for the flip up lights through their range of movement.
Supreme Member




Joined: Jan 2000
Posts: 3,178
Likes: 48
From: Tracy, CA
Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: aftermarket h4 headlights
If you run H4 bulbs, you're going to have to re-pin the existing headlight connector.
Read this tech article:
https://www.thirdgen.org/headlightupgrade
Specifically:
https://www.thirdgen.org/tech/images/connect.gif
Read this tech article:
https://www.thirdgen.org/headlightupgrade
Specifically:
https://www.thirdgen.org/tech/images/connect.gif
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: aftermarket h4 headlights
Projectors like these are what you can use to mount in those housings. Some people go to junkyards & rob projectors from used cars. That is fine, if you can find some that work.
The hard part about putting projectors in a Firebird, is clearance for the flip up lights through their range of movement.
The hard part about putting projectors in a Firebird, is clearance for the flip up lights through their range of movement.
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: aftermarket h4 headlights
Top of the page - red bar all the way across - click search. Try "headlight Conversion", try "H4 Headlight" - it's just like any other search box.
You'll also need to make a new wiring harness for headlights and use relays - anything that draws more power than stock repalcements will melt these old wires.
You'll also need to make a new wiring harness for headlights and use relays - anything that draws more power than stock repalcements will melt these old wires.
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Thanks guys! 
