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Thread: Dim Driver's side headlight

  1. #1
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    Default Dim Driver's side headlight

    Hi,

    My driver's side headlight is dim from time to time, causing the warning light to illuminate "headlight". I've taken it to a couple of mechanics who say it is a faulty switch. I've swapped out the switch only to find them faulty as well. Does anyone know if cleaning the contacts can fix this issue? Have any of you experienced this problem? New switches are over $400 dollars so I'm hoping to find a way to fix this.

  2. #2
    HS130-150591 4/79 zbane's Avatar
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    You're certainly not going to hurt anything by cleaning the contacts and connectors, so you might as well try it. Also check the fuses, but don't just peek in there and look at them...pull them out, clean those contacts, and verify (or just change) the fuses.
    David
    _____________________________________
    HS130-150591, April, 1979-280zx
    2001 Infiniti I 30

  3. #3
    Registered User d240zx2's Avatar
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    Check your grounds. Had the same thing occur on my 240. Cleaning the grounds solved the issue....
    First & Third owner of HLS30-00721
    B. 01/70 D. 03/12

    New owner of HLS30-15653
    B. 12/70 D.

    Frank in Houston, Texas

  4. #4
    Registered User jimbob_racing's Avatar
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    It's a grounding issue. No switch is going to make one bulb dimmer than any others.
    Jim

    '75 280Z (good car)
    '77 280Z (parts car)

  5. #5
    Z Club of San Diego Montezuma's Avatar
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    Got it too, I have brand new switches and nothing changed; reason, What Jimbob racing said. Clean the grounds and you will be good to go.

  6. #6
    Registered User Marty Rogan's Avatar
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    I had that problem a long time ago. It turned out that the prongs holding the fuse in lossened up over the years. I pinched them together, re-inserted the fuse ... problem solved!! If that doesn't do it, then it's probably a ground like everybody said.

  7. #7
    -The Green Beast- 24OZ's Avatar
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    Default

    Sorry for bringing up an old posts but I am experiencing this issue.

    Where are the grounds for the headlights located?

    I've found the main one from the combo switch going throughout the firewall and bolting to the inner wall, but where are the others located and how many are there?

    Thanks.
    George
    1973 240Z -The Green Beast- L28 FI

  8. #8
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    Listen up all!! One of the best things you can do for your Z is to remove your fuse box periodically, strip all the fuses and give that bad boy a 10 minute bath in vinegar. After bathing, rinse in clean water, blow the water out or let it air dry. Reinstall and load with fresh fuses and I guarantee your electrical gremlins will be greatly reduced. All that oxidation on the contacts will be gone gone away. This has been the tour du force on the 510 side of things for years. Second thing 510 fathers teach their kids after the tying the shoes lesson has been completed.
    Bruce Palmer
    Salem Or
    Sales@ztherapy.com
    www.ztherapy.com
    503-587-9800

  9. #9
    No more body roll! SteveJ's Avatar
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    George, the ground for the headlights goes from the switch for the turn signal over to the combo switch for the headlights and back into the wiring harness from that connector.
    73 240Z
    74 260Z

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