BHM fault?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by BobROss, Nov 3, 2021.

  1. BobROss

    BobROss Bobtail Member

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    Nov 3, 2021
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    im working on a 2015 114sd M2. Keeps blowing a 30A fuse, the dash lights go out and the wipers only work on and wont go back to park. truck runs about 45 mins before the fuse blows out again( the driver says). Ive swapped BHM between 2 similar trucks and letting them run right now. anyone have any experience with this?
     
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  3. Inderjit

    Inderjit Heavy Load Member

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    Sep 17, 2017
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    Which fuse is blowing? I doubt its the BHM, more likely something is rubbing and shorting out.
     
  4. Mr Bob

    Mr Bob Light Load Member

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    Mar 17, 2015
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    I would stick a circuit breaker in there and start wiggling wires to try and find a short.
     
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