If this cable is being used with a HELIX fish finder, then the #720106-1 AD HELIX M360 adapter must be attached between this y-cable and the HELIX unit, to the single plug end of the Y cable. If this cable is being uséd with a HELIX fish finder, then the #720106-1 AD HELIX M360 adapter must be attached between this y-cable and the HELIX unit, to the single plug end of the Y cable.
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