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Blue Wire/ABS

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Dirty-Low-Walker, Jan 9, 2018.

Page 1 of 3
  1. Jan 9, 2018 #1
    Dirty-Low-Walker

    Dirty-Low-Walker Medium Load Member

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    I purchased a HT-35 Talbert trailer that has ABS brakes, also the air suspension dump valve and winch free spool is activated by a electric solenoid that is powered by the blue wire, i own 2 99 KW's that have no power to the blue wire, does anyone know how to activate the blue wire to the ignition switch or where the blue wire ends in the cab, the 2 trucks are a T 800 and a W900.
     
    Dirty-Low-Walker, Jan 9, 2018
    Dirty-Low-Walker, Jan 9, 2018
    #1
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  3. Jan 9, 2018 #2
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Is the fuse there for "trailer hotline"?
     
    spsauerland, Jan 9, 2018
    spsauerland, Jan 9, 2018
    #2
    Oxbow and Dirty-Low-Walker Thank this.
  4. Jan 9, 2018 #3
    Dirty-Low-Walker

    Dirty-Low-Walker Medium Load Member

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    I looked today so it would be fresh in my mind, didn't see any fuse location for a trailer.
     
    Dirty-Low-Walker, Jan 9, 2018
    Dirty-Low-Walker, Jan 9, 2018
    #3
  5. Jan 9, 2018 #4
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Post last six of VIN.
     
    spsauerland, Jan 9, 2018
    spsauerland, Jan 9, 2018
    #4
    Dirty-Low-Walker Thanks this.
  7. Jan 9, 2018 #5
    pup

    pup Light Load Member

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    Some of the older kw's had the trailer hotline switch in the overhead console next to the radio.
     
    pup, Jan 9, 2018
    pup, Jan 9, 2018
    #5
    spsauerland and Dirty-Low-Walker Thank this.
  8. Jan 9, 2018 #6
    Dirty-Low-Walker

    Dirty-Low-Walker Medium Load Member

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    Dec 17, 2013
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    T 800 815269 W900 814060
     
    Dirty-Low-Walker, Jan 9, 2018
    Dirty-Low-Walker, Jan 9, 2018
    #6
  9. Jan 9, 2018 #7
    Dirty-Low-Walker

    Dirty-Low-Walker Medium Load Member

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    Dec 17, 2013
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    I replaced the visors on both trucks and had to drop the overhead , never seen a switch or a blue wire.
     
    Dirty-Low-Walker, Jan 9, 2018
    Dirty-Low-Walker, Jan 9, 2018
    #7
  10. Jan 9, 2018 #8
    pup

    pup Light Load Member

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    i think its a button. it may not be blue at that point in the circuit
     
    pup, Jan 9, 2018
    pup, Jan 9, 2018
    #8
    spsauerland Thanks this.
  11. Jan 9, 2018 #9
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Looks like both of your trucks are not wired for trailer hotline. It was switch on dash near jake switches during that time of build. I looked at another VIN of your trucks vintage to get a diagram. All of the wiring is there, you just need to connect it and add switch. Looks like spare fuse and relay was number four in PCB(fuse panel).
     

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    spsauerland, Jan 9, 2018
    spsauerland, Jan 9, 2018
    #9
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  12. Jan 9, 2018 #10
    spsauerland

    spsauerland Road Train Member

    4,296
    10,891
    May 31, 2010
    West Harrison, In
    0
    I have seen hotline switch by key switch also. Think one by warning light was resettable breaker.
     
    spsauerland, Jan 9, 2018
    spsauerland, Jan 9, 2018
    #10
    Dirty-Low-Walker Thanks this.
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