The WEST MARINE Single Contact Bayonet BA15S-1156 LED Bulbhas been designed as a replacement and upgrade for standard halogen, Xenon and incandescent filament bulbs, offering dramatically lower power consumption and heat generation, while having much greater lifetime and shock resistance. For even greater light output and quality as well as higher efficiency (more light per watt) please look to our Premium series bulbs. This bulb replaces and has similar brightness to 3 to 5 watt traditional Red bulbs using a short globe. White bulb cross reference #'s BA15S 1141, 2396, 1156, 67, 87, 12088, 1156NA, 97NA, 1095, 93, 97A, 1295NA, 97, 3497, 1073, 1295, 1195, 1156A, 7506, 199, 631, 1156ST, 1073LL, 1156LL, 7506L, 3497LL, 7506ST, 1156ALL, 97LL, 7506LL, 93LL, 631LL, 1141LL, 5008, 5007, 1155, 89, 57X, 105, 1003, 98, 1003LL, 67LL, 89LL, 105LL, 5008LL, 5007LL, 1155LL. Single contact on the base and in-line pins. 11-14VDC input range. 65 max lumens, radiates downwards/outwards only. Flush chip on board design for lowest possible eyestrain. Commonly used in interior marine lights, including map/chart nav station lights for use underway. Note this bulb is polarity (+/-) sensitive, if it fails to light when inserted into the fixture, the wires going into the fixture will need to be reversed. Note some boat builders wired fixtures without regard to polarity, which wire was + positive and - negative, due to the fact standard filament bulbs are not polarity sensitive.