I did the same. I direct wired my console graph with 10 gauge wire with a fuse directly to cranking battery and my bow graph with a stand-alone battery under the bow that powers the graph and my active target. Its just that all the other accessories like my bilge and nav lights go in and out sometimes due to the connections and I was thinking of replacing the fuse block since there is a little corrosion and thinking a new block might solve the problem.