2012 Volvo Daycab No Brake Lights on Truck or Trailer

Discussion in 'Volvo Forum' started by Smellfunny, Sep 28, 2020.

  1. Smellfunny

    Smellfunny Heavy Load Member

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    Trying to figure out where the brake light switch (if it has one) is located. I see a box on the crossover that looks similar to AMU on Freightliner. Is one of those the box for brake lights? If so which one? Volvo AMU.jpg
     
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  3. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Should be under panel behind clutch pedal. They usually have labeled tags on them.
     
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  4. Smellfunny

    Smellfunny Heavy Load Member

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    I found several air switches but none have power to them. I checked all of the fuses and relays and all appear to be fine. The ones that I think might be for brakes were marked E1 and D1 (if I remember right) But none had power to them. There was one that had brake on it and we replaced that one with another air switch from a different Volvo but nothing.
     
  5. nasriza

    nasriza Road Train Member

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    if you look on the firewall, there is a 1/4 line coming in blk hose other side of it is the SLS switch or look on the inside of the manifold for SLS written on manifold.
     
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  6. Smellfunny

    Smellfunny Heavy Load Member

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    They took it to the dealer. Will find out what it was hopefully. They said it would be two weeks.
     
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  7. Snailexpress

    Snailexpress Road Train Member

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    WOOOOOOWWWWWWWWW
     
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