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Technical Electrical issue !

Discussion in 'The Hokey Ass Message Board' started by 1930forderic, Aug 13, 2016.

  1. 1930forderic
    Joined: Sep 18, 2012
    Posts: 5

    1930forderic
    Member
    from chino

    Hey everyone , I'm a newbie here too and have an issue with my tailights . Have a 30 ford coupe with a Chevy style headlight light switch . Running "tailights" are on even though headlight switch is off , and no brake lights when brake pedal is applied . Headlight switch , brake switch ? Where would be a good place to start ? Thanks in advance !
     
  2. 325w
    Joined: Feb 18, 2008
    Posts: 6,502

    325w
    ALLIANCE MEMBER

    As far as t/lites you may have the wire on the wrong terminal. Brake lite needs power to one side of the brake switch.
     
  3. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    Not enough info. Does the car have an OEM type signal switch?

    From what you say so far, the rear lights that stay on could be brake lights on. That would explain no change when applying brakes. On a dual filament bulb, the brake is the bright filament.

    Brake switch has power one terminal, then power gets sent out on other terminal to OEM turn signal switch, or to rear lights if you don't have OEM style T/S switch
     
  4. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 17,584

    tb33anda3rd
    Member

    pull fuses to determine which circuit.
     
  5. 1930forderic
    Joined: Sep 18, 2012
    Posts: 5

    1930forderic
    Member
    from chino

    Just got the car one road a few months back and everything's been working correctly up until today when I walked around the back of the car (running ) and noticed the tailights were on . And like I say the headlight switch was off ..
     
  6. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    Suspect: the brake switch is stuck on.
     
    Blues4U, Hnstray, Jefe1970 and 2 others like this.
  7. dirt t
    Joined: Mar 20, 2007
    Posts: 5,393

    dirt t
    Member

    How did this problem come about? Have you made any changes to the wiring ? was the car working and this problem popped up? Could use a little more information.
     
  8. dirt t
    Joined: Mar 20, 2007
    Posts: 5,393

    dirt t
    Member

    Disconnect one of the wires on the brake light switch If tail lights go out the switch is bad.
     
    sunbeam, belair and firstinsteele like this.
  9. Engine man
    Joined: Jan 30, 2011
    Posts: 3,480

    Engine man
    Member
    from Wisconsin

    I would also check the brake light switch. If the brake lights are on it can be difficult to tell if the tail light is also on. Try your signal lights. It should over ride the brake on one side when it flashes then you might see the tail light as it gets bright and dims.

    If it has a pressure switch in the brake line, I would try to change it to one that contacts the pedal. The fluid pressure type are notorious for failing and can start a fire.
     
    The37Kid likes this.
  10. 1930forderic
    Joined: Sep 18, 2012
    Posts: 5

    1930forderic
    Member
    from chino

    Yep , that was it ! Thanks for the input !
    Nuts , bolts etc are one thing , but I get alittle nervous around elelctrical ! Lol ! Thanks again !
     
  11. The37Kid
    Joined: Apr 30, 2004
    Posts: 32,525

    The37Kid
    ALLIANCE MEMBER


    Can you post a photo of that fireproof switch? Bob
     

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