The WEST MARINE Single Contact Bayonet BA15S-1156 LED Bulb, 140 Max Lumenshas 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 5 & 7.5 watt traditional bulbs using the small/short globe. 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. 140 max lumens, radiates in all directions. Commonly used in interior marine lights, and various utility and signal/marker lights. 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.