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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Need help Please No Turn signals

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    8/10/2021 12:20 PM  #1

    Cab4word67
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    From: Portland, Ore
    Registered: 4/06/2019
    Posts: 1,152

    Need help Please No Turn signals

    working on a 71-72 mustang convert, everything works but the turns. I found and checked both the flasher above the fuse block and the one in the glove box. This car has 12K original miles and everything works, just no turns. books say its the little 4A fuse that also runs the clock and dash lights they work. Even the 4 ways work. there are just no turns.
    Chris 

    Slammed Big Blue, ran over the varmints that messed with the Stang. Now all is good in the NW
     

    8/10/2021 12:59 PM  #2

    Rufus68
    I FYI 24-7

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    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 865

    Re: Need help Please No Turn signals

    Do the emergency flashers work?

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    8/10/2021 2:00 PM  #3

    josh-kebob
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    From: Madison, AL
    Registered: 4/06/2013
    Posts: 2,902

    Re: Need help Please No Turn signals

    All the bulbs good,

     

    8/10/2021 2:40 PM  #4

    Cab4word67
    Senior 24-7 FYI Addict

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    From: Portland, Ore
    Registered: 4/06/2019
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    Re: Need help Please No Turn signals

    Yes and yes all bulbs work on parking and 4 way flash. car only has 12K on it, its a time capsule 

    Slammed Big Blue, ran over the varmints that messed with the Stang. Now all is good in the NW
       •Thread Starter
     

    8/10/2021 5:04 PM  #5

    Rufus68
    I FYI 24-7

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    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 865

    Re: Need help Please No Turn signals

    If the emergency flashers work, and you have verified the flasher module is good, then it's time to pull the steering wheel and check the flasher switch.

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    8/10/2021 5:10 PM  #6

    cman66
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    From: Ponchatoula, LA
    Registered: 1/06/2018
    Posts: 181

    Re: Need help Please No Turn signals

    Cab
    do you have the wiring diagram?
    Check that you have power to the column before the modular plug then after.
    Possible that pins are not making good connection.
    Looking at wiring diagram looks like orange with light blue stipe is one side
    Light green with orange stripe is the other side
    cman

    Last edited by cman66 (8/10/2021 5:24 PM)

     

    8/10/2021 9:56 PM  #7

    Cab4word67
    Senior 24-7 FYI Addict

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    From: Portland, Ore
    Registered: 4/06/2019
    Posts: 1,152

    Re: Need help Please No Turn signals

    Well i am getting lost in the wiring

    Slammed Big Blue, ran over the varmints that messed with the Stang. Now all is good in the NW
       •Thread Starter
     

    8/11/2021 5:10 AM  #8

    John Ha
    I FYI 24-7

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 892

    Re: Need help Please No Turn signals

    Sounds like the turn signal switch is either broken or not connected.  When you have the brake lights on (brake pedal pushed down) does each brake light act properly when you signal a turn each way (right brake light stays on and left brake light goes off when left turn signal selected, left brake light stays on and right brake light goes off when right turn selected)?

    Founding Member of the Perpetually Bewildered Society
     

    8/11/2021 5:16 AM  #9

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,417

    Re: Need help Please No Turn signals

    John Ha wrote:

    Sounds like the turn signal switch is either broken or not connected.  When you have the brake lights on (brake pedal pushed down) does each brake light act properly when you signal a turn each way (right brake light stays on and left brake light goes off when left turn signal selected, left brake light stays on and right brake light goes off when right turn selected)?

    My sentiments exactly.  I went through this with my '67 many years ago and after pulling my hair out for a week I finally swapped the t-signal switch and problem solved.  If you get a replacement I would advise sourcing an NOS once from eBay, etc.  You can usually find one for $150 or so on eBay. 
     

     

    8/12/2021 11:38 AM  #10

    John Ha
    I FYI 24-7

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 892

    Re: Need help Please No Turn signals

    But even before that, check that you have 12 V at the turn signal flasher.  If it's not there, you will see pretty much what you're seeing.  That power should be coming from the fuse box and it's probably only going to have voltage on it when the key is either in "Acc" or "Run"

    Founding Member of the Perpetually Bewildered Society
     

     

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