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Thread: H1 vs. H4 - Calling Light Police

  1. 09-11-2012, 04:05 PM #1
    jaudette3
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    H1 vs. H4 - Calling Light Police

    My memory has dimmed (sorry) during my hiatus from the P-car scene. I'm starting to go through my headlights and I'm trying to identify what I have. I've done some research and found a lot of conflicting information. Some have said that H1's have one bulb and H4's have two bulbs. Some have sold what they called H1's that had two bulbs. Some have said that H1's have four adjusting screws with an instruction label inside. Etc. Some of said the older ones had lenses with clear tops and the later ones with lenses with frosted tops. Etc. ???

    Here's the pair that I'm trying to identify right now:

    Name: headlight.JPG Views: 539 Size: 155.4 KB

    Name: headlight-back1.JPG Views: 470 Size: 160.5 KB

    Name: headlight-back2.JPG Views: 496 Size: 140.2 KB

    Appreciate the help!

    JohnA
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  2. 09-11-2012, 04:09 PM #2
    beh911
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    A nice pair of H1s you have there...
    1969 S Coupe #761
    Early S Registry #1624
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  3. 09-11-2012, 04:24 PM #3
    M_deJong
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    Those are H1's. H4's just have a normal 3 prong connection on the bulb.
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  4. 09-11-2012, 04:36 PM #4
    LongRanger
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    Dual reflectors w/ separate bulbs + wiring, + 4 adjuster screws = H1

    WAY more here . . . see post #135

    http://www.early911sregistry.org/for...ty-nine/page14

    HtH
    Last edited by LongRanger; 09-11-2012 at 04:38 PM.

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  5. 09-11-2012, 04:37 PM #5
    jaudette3
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    Are the earlier or later H1's or H4's the ones with the frosted on top lenses?
    ”Lighting Resources for Hardcore Air-Cooled Porsche Enthusiasts”
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  6. 09-11-2012, 05:53 PM #6
    Cliff
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    Early h 1 & h4`s have clear tops. Later h4`s have frosted tops. H1`s never had frosted tops,,,,,,Cliff
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  7. 09-11-2012, 06:26 PM #7
    jaudette3
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    Thanks for the input everyone. Now I know what I have in terms of H1s and H4s.

    JohnA
    ”Lighting Resources for Hardcore Air-Cooled Porsche Enthusiasts”
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