I recently acquired a transducer switch which will allow me to select front or back transducers from my 788.
The switch has two power leads in addition to the normal transducer leads and the switch to head leads. My question is: what is the function of the power leads to the switch.... doesn't the operating transducer get its power from the head? If this is the case, need these leads be connected or can they just be isolated. Instructions coming with the unit only say to hook them to the fuse block.