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Turn Signal Problem.

Discussion in 'Intermediate CJ-5/6/7/8' started by Gerbear, Sep 16, 2020.

  1. Sep 16, 2020
    Gerbear

    Gerbear New Member

    Idaho
    Joined:
    Aug 11, 2020
    Messages:
    9
    I'm sure this topic has been discussed at great lengths, but I have a hard time finding applicable info.

    My turn signals don't work...at all.

    If I push the hazard light button all signal lights turn on but don't flash. I replaced the flasher unit at the fuse box and checked all the fuses with no improvement. The rear lights are new.

    I noticed that my front side marker lights weren't working even though the test light shows power to them. Eureaka!! I ran a new ground wire and this made my side markers turn on, but when i turned on the turn signal light it instantly blew the fuse. I don't understand why my side markers would have anything to do with my turn signals. The turn signals do light up with the running lights so i know they recieve power.

    I also noticed that when i was testing wires for power coming off the turn signal switch, when i touched my test light to a specific wire my test light started flashing and I could hear the flasher clicking as it should when the turn signal is on.
     
  2. Sep 17, 2020
    Twin2

    Twin2 not him 2020 Sponsor 2019 Sponsor

    Virginia Beach, VA
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    Apr 28, 2011
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    4,368
    it would help if we knew what jeep your working on
    side markers 70 ish . only connected to running lights
    4 way flasher isn't for turn signals ( unless it's on switch ), turn signal has it's own flasher
    turn signal switch wiring
    flasher power wire
    brake switch wire
    LF light wire - yellow
    RF light wire - green
    LR light wire - orange
    RR light wire - brown
    here's where the FSM is very useful
     
  3. Sep 17, 2020
    Gerbear

    Gerbear New Member

    Idaho
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    Aug 11, 2020
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    This is on a 1981 cj5. I tried to post some pictures of my fuse box and wiring but wasnt able to.
     
  4. Sep 17, 2020
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2020 Sponsor 2019 Sponsor

    cordele, Ga.
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    Did TS work before you changed to new rear lights?
     
  5. Sep 17, 2020
    Gerbear

    Gerbear New Member

    Idaho
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    Aug 11, 2020
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    No they did not.
     
  6. Sep 17, 2020
    Gerbear

    Gerbear New Member

    Idaho
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    Aug 11, 2020
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    This is the flasher prior to me changing it. I did try cleaning up the ground wire screwed to the fire wall as well.
     

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  7. Sep 18, 2020
    sterlclan

    sterlclan Member

    exploring the...
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    Is the square one a flasher too? Sounds like you aren’t getting power to the switch. If you turn the direction al on and hit the brakes does one brake light go out? Ie left directional =no left brake light? This helps rule out the switch
     
  8. Sep 18, 2020
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
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    Aug 13, 2015
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    I’m not familiar with those jeeps, but it looks like you have two flasher units. One for the turn signal, and one for the four-way flasher. Some companies did this did this so the power to the four-way flasher was always hot and the power to the turn signal was keyed. Where does that wire go that’s coming out of the flasher? Into an extension cord? That’s odd.
     
  9. Sep 18, 2020
    timgr

    timgr Eppur si muove. 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    I'd say that wire is a ground for the square flasher. An electronic flasher needs a ground (not present on the thermal flashers), because of how it works. The circuit needs to be powered all the time, and when the flasher relay heats and opens, any potential ground path goes away.
     
  10. Sep 18, 2020
    Gerbear

    Gerbear New Member

    Idaho
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    Aug 11, 2020
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    Yeah, that's correct. The square one is the flasher unit and the round one is the hazard lights. The wiring under the dash is a disaster. In fact, I'm pretty sure the orange wire there is part of an extension cord. Theres also speaker wire spliced into some of the instruments. At this point I'm considering buying wiring harnesses to rewire the entire Jeep.

    But to answer your question; yes, the brake like goes out on the side that the signal light is set to.
     
  11. Sep 18, 2020
    sterlclan

    sterlclan Member

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    so we need to figure out wich one needs power to make it all work a manual helps
     
  12. Sep 19, 2020
    Gerbear

    Gerbear New Member

    Idaho
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    Aug 11, 2020
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    Found it!!! Turns out it's my turn signal switch that's not making contact. Should have it replaced in the next couple hours.
     

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