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    vacuum failure or bad switch

    The headlights on my '83 Mark VI come on as soon as I start the car and I can't turn them off...Vacuum failure or bad headlight switch?
    '79 Continental Town Car
    '90 Crown Victoria LTD
    '94 Crown Victoria

    #2
    Switch or Autolamp sensor. Vacuum only operates the doors.
    2020 Volvo XC90 T6 Momentum (Ice White / Blonde)
    2022 Ram 1500 4x4 5.7 Etorque, Built to Serve Edition, (Granite Crystal / Black)
    Past Panthers
    1989 Grand Marquis LS (Cabernet/Grey), 1989 Lincoln Town Car SS (White/Blue), 2004 Mercury Grand Marquis Ultimate (White/Black)

    Originally posted by Lincolnmania
    if its got tits or tires it's bound to give you trouble

    Comment


      #3
      make sure there is nothing covering the lamp sensor. Sounds like its blocked or bad though. If the switch was bad, it would have the lights on constantly.
      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Comment


        #4
        Turn the autolamp off on the outer dials and see if they go out. If not, switch.

        Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
        rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

        Originally posted by gadget73
        ... and it should all work like magic and unicorns and stuff.

        Originally posted by dmccaig
        Overhead, some poor bastards are flying in airplanes.

        Comment


          #5
          Originally posted by sly View Post
          Turn the autolamp off on the outer dials and see if they go out.
          Problem solved. Thanks Sly!
          '79 Continental Town Car
          '90 Crown Victoria LTD
          '94 Crown Victoria

          Comment


            #6
            yup... autolamp sensor is bad then probably (or the wires from it to the switch are buggered). If the relay was welded shut, it would keep the lights on no matter what you did, so that's apparently fine since the lights went out with the feature turned off... so that leaves the sensor and switch and related wiring.

            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

            Originally posted by gadget73
            ... and it should all work like magic and unicorns and stuff.

            Originally posted by dmccaig
            Overhead, some poor bastards are flying in airplanes.

            Comment

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