Have Boat Questions? Ask a Boat Repair Expert.
Hello, my name is***** will assist you.
What this sounds like it is going to be is a bad/loose ground connection on that side of the boat. The power to these lights comes from different switches, but the grounds all tie together. The fail point will be before it joins into the grounds on the drivers side. I would remove the front and the marine light from the front of the boat and check to ensure that the black wires are all connected. If you have an anchor locker in the bow, the wiring will most likely be running thru there as well and I would look there for a break in the black wires as well.