MarPac Festoon Bulb, 10 Watts 12 Volt 70DP1 CLR 2-Pack.

Festoon Light Bulbs are double ended bulbs that resemble AGC style glass fuses and are often used for marine navigation lighting. They give off a warm, incandescent white light. Constructed of heavy-duty glass bulb housing and filament for break resistance and longevity with nickel plated brass base ends for corrosion resistance and positive contact.