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Mazda Miata: Headlight plug

  1. #1
    js631
    Guest

    Headlight plug

    Has anyone had a the plun in to the headlight melt down? mine have melted
    to the point of not connecting so the headlight will not turn on - The
    dealers answer is to replace the whole harness for about 2K.


  2. #2
    Lanny
    Guest

    Re: Headlight plug

    In article
    <talkaboutautos.com>,
    "js631" <com> wrote:
     

    Any auto parts store sells headlight sockets you can splice into your
    harness after cutting off the old ones. But first, fix what's causing
    them to melt. I'll bet you're running some massively-overwattage blue
    headlight bulbs.

    --
    Lanny Chambers, St. Louis, USA
    '94C
    the alignment page:
    http://www.hummingbirds.net/alignment.html

  3. #3
    js631
    Guest

    Re: Headlight plug

    No sorry I'm just running the standard phillips halogen bulb - I did get
    replacements from PEP boys but the wiring is smaller and I'm concerned
    about overloading them - Next stop is a junkyard


  4. #4
    Per
    Guest

    Re: Headlight plug

    On Thu, 24 Jun 2004 11:53:42 -0400, "js631"
    <com> wrote:
     

    Where are they melted?
    While I'd love to help you, i'd seriously concider asking someone in
    the UK club...

  5. #5
    KWS
    Guest

    Re: Headlight plug

    What the dealer proposes is significant overkill.

    If the headlight is good and is no longer making contact with the plug, it
    means that the contact in the connector (the metal bit that the headlight
    connector actually plugs into) is electrically "open". It got to this state
    by first dissipating a lot of heat which was caused by a poor connection,
    either at the contact/headlight connector interface or it was a bad crimp
    where the contact and the wire meet. I would guess it was the latter. The
    heat is what caused the plug to melt.

    This is not a chronic problem; it's poor workmanship that affected your car
    (Mazda does precious little of this...by the way). You mention in another
    post that a replacement connector is available with smaller wiring. If the
    insulation on the wire is not as thick, but the wire thickness itself is the
    same, then I would use the connector. Make certain that the new contacts
    (where it splices into the existing harness) are electrically good. If you
    are not sure, find a friend who is an electrician, electronic tech or
    someone who understands this stuff and have them take a look at it.

    I suspect that this, once fixed, will remain fixed.

    Ken


    "js631" <com> wrote in message
    news:talkaboutautos.com... 



  6. #6
    Leon
    Guest

    Re: Headlight plug

    "KWS" <com> wrote:
     

    Should be simple to just measure resistance, either to battery plus
    or ground, depending on wire.

    Leon

     

    --
    Leon van Dommelen Bozo, the White 96 Sebring Miata .)
    To reply to me, the word Miata must be in the subject.
    EXIT THE INTERSTATES (Jamie Jensen)

  7. #7
    KWS
    Guest

    Re: Headlight plug

    Accurately measuring in the milliohm range is a little tricky. You get into
    issues of lead and contact resistance. Without having a handy AWG chart to
    consult, the difference in resistance when you include a short length of,
    say 20AWG in a 18AWG harness is probably not measurably significant.

    A better way would be to wire it in and see how hot it gets. Probably won't
    be that big a deal for a short length of "similarly" gauged wire. If it's
    off by an AWG or two, for a short length, it should work OK. The wire gage
    would be initially chosen for an engineered voltage drop across it's length
    to and from the voltage source, not temperature rise.

    Ken



    "Leon van Dommelen" <net> wrote in message
    news:com... 
    it 
    state 
    car 
    the 
    the 
    you 
    melted 




 

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