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Message: <blockquote data-quote="atuck593" data-source="post: 247336" data-attributes="member: 4904">Well for number 2... as long as I run both the positive and negative feeds to the lights and fish finder from the switch panel... I won't need the bus bar then?  The panel will act as the bus bar or common negative?Number 3... The fish finder will be mounted on the back of the boat, so the transducer wire won't go the length of the boat, just right to the finder.What is a good all around guage wire to run all of this off of?  Example from the battery to the panel?  The panel to the LED lights and finder?I use an old extension chord to power directly from the battery to the outlet plugs.  I figured this should be strong enough to handle the power as well as have the outdoor coating to handle any water or moisture in the bottom of the boat.</blockquote>