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  1. DatGuyC

    EESS PCB replacement for the HMMWV ?

    After you charged the batteries back up and connected to them to the truck while everything was off, was there a spark? There isn't supposed to be any load without anything on. I've had my s3 box fry a relay which left the glow plugs on and killed the batteries really quick.
  2. DatGuyC

    EESS PCB replacement for the HMMWV ?

    yep, if it says smart start then its newer. You can also tell because they have the small testing port on the front.
  3. DatGuyC

    EESS PCB replacement for the HMMWV ?

    You could always take the box out and take it apart and see whats blown. If fixable it will probably cost less than a new S3 box.
  4. DatGuyC

    EESS PCB replacement for the HMMWV ?

    That S3 box is the latest and greatest version. Sounds like you fried your box though.
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