My big motor, trolling motor both are working great. The problem I had yesterday out on the lake was my power switch for all of my controls starting flickering, then went out. It came back on, but now my graph screen won't stay on. I am thinking loose connection or bad fuse. My problem is I went to look at them and there are 1,000 wires under there and I am not a wire guy. I check three fuses I could find and all of them are in great shape. Where do I start? Any help would be greatly appreciated.