921 T-5 Wedge Base Miniature Replacement Light Bulb 18 Watt 12 Volt (10 Pack) T-5 WEDGE (W2.1X9.5d) 12.8V 1.4A 21CP Bulb Shape - T-5 Miniature Voltage - 12 Volt Wattage - 18 Watts Average Life - 1000 Operating Hours