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67 GT 350 ...High beam lamp question

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by Josburke, Apr 11, 2010.

  1. Josburke

    Josburke New Member

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    ....Silly question but here goes......exactly how are my 67 GT 350 (inboard high beams) supposed to work ?........I have #1786 in unrestored (as in unfinished) condition....wiring for the lamps was non working when I bought it 13 years ago....had been rigged to a switch under the dash... I acquired the 2 center lamp harnesses from Branda years ago......now all four work on high beam and overload the circuit breaker in the switch (so I'm told that's why they flicker after a few minutes on high beam).....but is this correct (not the flicker but rather the operation)......should the outer bulbs/lamps be low beam only and the high beam centers only on when using high beam ?...BTW--I am using modern halogen lamps...
    I was told to just get a new switch (regarding the flicker)...but Im not sure my lamps are set up correctly....please advise so I'm not trying to fix something that isn't broken but rather lit incorrectly with the wrong bulbs...

    not another 67 around my area to ask anyone.....
     
  2. roddster

    roddster Well-Known Member

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    Stock: outside lamps are low beams. Only two lit when you turn on the head lights. All four lights come on with the high beams.

    1) I've heard where on the Shelby's Fomoco used the Cougar headlight switch as Cougars were built with 4 head lamps, and the Mustangs only two.
    This is if you have stock highbeam bulds in the center

    2) In the long ago, I put in "Cibe (?)" french pencil high beams in the center head lamps as I used to gymick rally the car. Then I also switched to "aircraft landing lights". Yes, after about 30 seconds the headlight circuit breaker would start turning the lights off. Since you mentioned the under the dash switch, I suspect this is the case. To correct this, you need to wire in a relay so that the center high beams are fed off of the battery, through a relay.

    If you just want stock center bulbs, do item #1
     
  3. Josburke

    Josburke New Member

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    ..but are the outside lamps low beam only?..mine are low beam only on low beam of course...but all four on high beam when put on "bright"....my car still has the original lamp switch
     
  4. 2dragpac500converts

    2dragpac500converts Well-Known Member

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    I think outerlights are low beam and high beam. They have 3 wires running to them. The inner or the high beams only have 2 wires.

    chris
     
  5. AJD350

    AJD350 Active Member

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    As Roddster noted, the Cougar switch is the fix. It has a heavier circuit breaker. Worked for me.
     
  6. 65gtfastback

    65gtfastback Well-Known Member

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    If you buy a new one NAPA switches have a reputation for having a less sensitive circuit breaker.
     
  7. shelby times two

    shelby times two New Member

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    I've heard that the shelby headlight switch is 15 amps. I've been told to go to a 18 amp switch like on a Torino or Galaxie. If nothing else, it would make your lights project at a consistent brightness, even at idle speeds.
     

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