Originally Posted by
ezfishn
There are two different Y-cables for connecting transducers. One is used to connect two transom SI transducers for applications where there may be interference from inboard/outboard motors. The cable splits the LH and RH SI inputs from the two transducers. The other Y-cable is used normally to connect a in-hull or transom DualBeam or Dual Spectrum (Gen3) transducer for on-plane depth readings with a transom SI transducer. They can also be use in conjunction with one another. There used to be a TS3 switch that allowed two transducers to be connected but no longer produced.