Taillights quit working

Electrical & Ignition

  1. lemondana

    lemondana New Member

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    On my 71 Polara, the taillights quit working last fall. Brake lights and turn signals still work. I haven't had a chance to get into it yet, hopefully this weekend. Any ideas. Any help would be appreciated. Thanks!
     
  2. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    If this were a ‘67 Imp I would blame the headlight switch.
     
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  3. mr. fix it

    mr. fix it Old Man with a Hat

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    "sounds like the turn signal switch is failing if fuses don't provide an easy solution."

    DOH'!!! I read it wrong...:BangHead:

    Not the turn signal switch. do what Matt is telling you....
     
    Last edited: May 17, 2019 at 7:42 AM
  4. rkrochen

    rkrochen Member

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    I would start at the fuses but it is likely the headlight switch. Get a wiring diagram and trace back the wires. Could also be the bulkhead connection.
     
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  5. traintech55

    traintech55 Senior Member

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    The wiring for the rear of the car DOES NOT go through the bulkhead connector. It runs down the left side of the vehicle to the trunk under the carpeting.
     
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  6. lemondana

    lemondana New Member

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    Thanks for the ideas, I'll get back on here when I figure it out.
     
  7. mr. fix it

    mr. fix it Old Man with a Hat

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    it could be both bulbs as well...
     
  8. rkrochen

    rkrochen Member

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    Now that you mention it you are probably correct however that is the reason we use a wiring diagram. Sorry for misleading you a bit.
     
  9. Mr C

    Mr C Senior Member

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    Could be a lot of things...corrosion on light housings leading to bad grounds, loose/ bad connections in wire harness, bad headlight switch. You need an FSM, and patience...lots of patience. You'll run it down.
     
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  10. 65sporty

    65sporty Old Man with a Hat

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    The parking lights in front work? Only the tail lights are out? Check a wiring diagram and see if the wire is the same for both running lights, if it is there must be a connector or a wiring issue to the rear.
     
  11. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    It’s the switch, just wiggle it and if that doesn’t work have it rebuilt. My .02.
     
  12. 65Fury440

    65Fury440 Senior Member

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    Oh I went rounds with my car over brake lights.
    Rock Auto sold sold NOS, emphasis on old, kept getting bad switches. The brake lights were only drawing a couple amps, just crappy components that came in really old boxes.
    Might as well get familiar with the FSM
    MyMopar - Mopar Forums & Information - Service Manuals
     
  13. lemondana

    lemondana New Member

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    Thanks for all of the replies. It ended up being just the fuse for now. Now to figure out why the fuse blew and if it will happen again.
     
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  14. Gerald Morris

    Gerald Morris Well-Known Member

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    Fair chance its the fuse BOX! My fuse box has a loose connection to the circuit, and ever so often I loose tail lights and instrument lights too. Mind you, I believe a 71 might have a little bit more circuitry than my '66, but not too much. Loose elements in 50 yr old switches, load centers and such devil these cars....
     
  15. jct

    jct Senior Member

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