Rear turn signals

Discussion in 'Electrical and Ignition' started by Kbharley, Oct 11, 2018.

  1. Kbharley

    Kbharley Active Member

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    I have a 72 demon and when I switch the turn signal to the left the front bulb flashes like normal but nothing happens in the rear
    And when I switch the right signal on the front bulb work like normal but both lights flash in the rear

    Please help
     
  2. j par

    j par Well-hung Member

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    Change the light bulbs...
     
  3. fklskv

    fklskv Well-Known Member

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    bad ground
     
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    • Arron tate

      Arron tate 1973 H code Duster

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      Hello
      Confirm that both rear taillights are connected to a good body ground. Confirm that the battery negative is connected to the engine block And to the body. Confirm that there is a good ground to the metal housing of the dash cluster. Confirm that the rear bulb sockets / contacts are in good shape And the lead contacts on the bottoms of the lamps are good. Confirm that the back and sides (ground) of the lamps are clean . Check that the lamps are orientated correctly in the sockets. Last check that you have the correct lamps (1157).
      Hope this helps
       
    • j par

      j par Well-hung Member

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      ^^^^yeah for surely do all that first before you just check and see if your bulbs burnt out.
       
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      • fklskv

        fklskv Well-Known Member

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        This is a perfect example of why you go out and buy a Power Probe.

        If you don’t need it today you will tomorrow
         
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        • j par

          j par Well-hung Member

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          There hasn't been one wiring issue on the car that I haven't been able to solve with a Power Probe or at the very worst a free Harbor Freight voltmeter.
           
        • Dana67Dart

          Dana67Dart Most undignified way to get to Colorado!

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          Also have to ask have you verified the lamps are the correct ones all 4 corners and they work.

          Have any wiring changes been done? Switches been replaced?

          Both rear lights flashing when right turn is on makes me think switch OR messed up wiring.


          Does the emergency flasher work as expected?


          I had a situation where while I was replacing my left front fender ( 67 Dart) I had the left front headlight turn signal harness not grounded and the turn signals would not flash at all - goes to the good grounds thinking.



          Time to download a wiring diagram and start tracing (might have to go with dart or valiant or a year newer but will help guide you)

          MyMopar - Mopar Forums & Information - Mopar Wiring Diagrams 1972 to 1976
           
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          • Kbharley

            Kbharley Active Member

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            Got it figured out yesterday
            I have a probe just wanted to know where to start
            Ended up being the turn signal switch
            Was getting power to the switch but wasn’t transferring to the rear for some reason
            Changed the switch and pulled a wire that someone had bypassing the harness and it fixed it
            Thanks for the help guys
             
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            • j par

              j par Well-hung Member

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              Nice job asking questions and staying on it!
               
            • Arron tate

              Arron tate 1973 H code Duster

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              Nice job. ^^^^^
              Kinda thought is was more then just a bulb burnt out issue.
              ^^^^^
               
              Last edited: Oct 12, 2018