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  1. #1
    Member
    Join Date
    May 2017
    Location
    Rochester, NY
    Posts
    54

    StructureScan HD power issue?

    All,

    I just recently purchased a used boat. Came with structure scan HD. I cannot seem to get power to the LSS black box. The previous owner installed the box, he ran the power for the black box to the horn switch, with some simple removable crimped terminals. I can plug the horn back to the switch and it blows loud and clear, but cannot seem to power up the LSS black box. I cut, stripped, and re-crimped all the wires, attached to horn switch, still nothing. Ive got red and yellow into one terminal, and black into the other (blue not used).

    Am I missing something?

    Thanks in advance.

  2. Member
    Join Date
    Jan 2015
    Location
    Lebanon, Tn
    Posts
    1,309
    #2
    Yellow from the HDS unit needs connected to the yellow of the lss box. That is the turn on lead so the box comes on when the graph is turned on.

  3. Member
    Join Date
    Dec 2012
    Location
    Paris Landing at Ky Lake
    Posts
    2,459
    #3
    Having the red and yellow connected together to 12 volt positive and black to negative is fine if if the positive power is through a switch to turn it off when not in use. Check the polarity and the fuse.