Grateful,
If you have power to your main fuse panel, and power from each fuse to each device, I would suspect you have lost the main return or negative back to your battery. That is, if none of the devices work. Look for a broken conductor either at your battery or where it ties into your fuse panel. You can lose this return just from a bad connection. If your boat is a few years old, remove an clean connections at battery using fine grit sand paper. You can clean fuse panel connects (stab type) usually by just pulling them apart, then pushing them together again. Male stab can be sand papered while the female connector can be pinch slightly with pliers to make a better connection.
You should disconnect and clean all connections at your batteries at least once per year. Make sure you label your conductors before you disconnect them, so you know where they all go.
I also have a Lund, and when you put the main power on, it powers up navigation lights, livewell pumps, bilge pump, CD player, horn, console lights, livewell lights, and cell phone plug. I really suspect a return problem in your case.
Try this (only if you are sure of what you are doing): Take a separate conductor (insulated wire, say a #14) and tie it from the negative of your battery to the negative post of your main power panel. If you don't know where this negative post is on either end, don't do it. Get someone that knows electricity.
Send me a PM if you are close to Kingston, maybe I can help.
Good Luck, Blair Taylor
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