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Fld120 no high beams/ signal stat diagram

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Dino soar, Jan 1, 2020.

  1. Jan 1, 2020 #1
    Dino soar

    Dino soar Road Train Member

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    I have new headlights to put in my truck and the low beams on the outside work but the high beams on the inside are not working.

    I noticed that on the light bar the high beam indicator does not come on either.

    I do not have electricity for the high beams under the hood.

    I was wondering if there is a diagram for the signal stat ( turn signal and high beam mechanism ) so that I can manually jump the high beams and isolate the problem.
     
    Dino soar, Jan 1, 2020
    Dino soar, Jan 1, 2020
    #1
    Rideandrepair Thanks this.
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  3. Jan 1, 2020 #2
    Dino soar

    Dino soar Road Train Member

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    I just read an Old Post that said the key has to be on for the high beams to work on the FLD.

    I would never have dreamt of such a thing.

    I'll try tomorrow.
     
    Dino soar, Jan 1, 2020
    Dino soar, Jan 1, 2020
    #2
    Rideandrepair and spsauerland Thank this.
  4. Jan 1, 2020 #3
    xsetra

    xsetra Road Train Member

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    Also check the connection on the signal stat. It may be loose. I have to push mine tight once in a while. I notice that when my turn signal doesn't work.
    My truck only energizes one dim light without the key on.

    Felt like a real xxxxxx after I changed 2 headlights in the rest area one night.
     
    xsetra, Jan 1, 2020
    xsetra, Jan 1, 2020
    #3
    Rideandrepair and Dino soar Thank this.
  5. Jan 2, 2020 #4
    kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

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    My FLDs did have to have the key on for high beams to work. Found that out during a dot inspection. The cop actually asked me if I had the key on because my high beams didn't come on.
     
    kemosabi49, Jan 2, 2020
    kemosabi49, Jan 2, 2020
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    x1Heavy and Rideandrepair Thank this.
  7. Jan 2, 2020 #5
    Dino soar

    Dino soar Road Train Member

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    Yes, the key has to be on.

    All is working now!
     
    Dino soar, Jan 2, 2020
    Dino soar, Jan 2, 2020
    #5
    Rideandrepair, xsetra and x1Heavy Thank this.
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