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You might start with this article.
http://www.whalercentral.com/articles...icle_id=51

The wires to the bow lights and stern light are 2 separate sets of wires.

The bow light wires go to starboard side panel, out through the hull and into the rub rail track. They then go forward to the bow.

The stern light wires go down the rigging tunnel to the stern light.

So, it seems that you have 2 sets of wires either broken or have come loose from the light switch.