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Proper Terminals For Motor Relay

Discussion in 'Fisher Engineering Discussion' started by Brookside, Jan 24, 2011.

  1. Brookside

    Brookside Member
    Messages: 55

    Does anyone know the inner workings of the motor relay (solenoid switch) enough to make a judgment as to whether it matters which terminal the battery cable and the motor cable are attached to? I'm guessing that it does not, but I'm open to other opinions. I just replaced the relay on my MM1 plow after years of working fine. The instructions with the new relay specifically showed the battery cable going on the upper terminal, and that's where it was on the old relay. Afterward I was looking at my owner's manual, and it shows the battery cable on the lower terminal. I went out and changed the cables to conform with the manual, and everything seems okay, but it makes me think that it really doesn't matter which terminal is used. Any thoughts?
  2. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    Doesn't matter which terminals you use for the motor/batt, as long as they are they big ones
  3. Brookside

    Brookside Member
    Messages: 55

    Thank you, that was the conclusion I had come to, but wasn't sure if I was missing something.