Cwag- just had the same problem with mine. Took the toon to the coast last year and have been paying for it since. Neither bow light would come on but the stern would. Checked the connector at the right front light and had power. Figured it might be corrosion. After taking off the light (which is a pain due to Bennington driving a sheet metal screw into the aluminum trim), I twisted the bulb in the socket and it came on. Did the same with the left and it came on. Will go back with some dielectric grease and hope that cures it.