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Bulb for Aqua Signal Series 40, 41 & 50
39' >

Part #: T1978
$24.35
Replacement bulb for Aqua Signal Series 40 and 41 white navigation lights Confirm this is the correct bulb by looking for the Aqua Signal brand molded into the top of your light. 12 Volt, 25 watt. Used in steaming, stern, and red and green bow navigation lights.
It is possible, by simply replacing the bulb, to convert most of these fixtures to low amperage draw LED. This makes a huge difference in the drain on your batteries while sailing at night, reducing the nearly 2.5 amp draw to about .1 amp. See the "LED Upgrade" below under "May we also suggest".

Warning: You cannot substitute a white LED capsule for an incandescent bulb in your red or green navigation lights. The difference in the color temperature of light emitted by an LED causes your green light to appear blue to other boats.