Need help connecting hummingbird helix 5 to accessory switch

Emt220

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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
 
That switch is designed for automatic operation of the bilge or manual so you should have two points of power when the switch is activated. Search the forum there a post here that probably has your electrical schematics in it.
 
Thanks for the info.i know now I need to find where the brown wire is connected and connect my power there.
 
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