I am a new owner of a 2013 Bennington 20slx.i am trying to connect my helix 5 to the 3postion accessory switch.on the schematic it is labeled as an option for bilge pump which I do not have.the switch on the back does have 2 red wires connected and a orange wire.i can only assume the red are the power from the battery but not sure what the orange is.the switch does light up when turned on but I don't believe it controls anything.can anyone tell me how to connect my hot wire from my fish finder to this switch?thanks for any advice