Panel Post Light. Compact design, just 3/4" x 1/2" (.25mm shaft diameter). 2 super-bright LEDs. Ideal for panel lighting or map lighting. Substantially brighter than conventional instrument post lights, so one LED assembly can illuminate several instruments or a section of your instrument panels.
 
Same assembly from Aircraft Spruce is $15.00
 
Total Power Consumption 0.6 Watts
Operating Voltage 12~14.5 VDC
Current Draw 40mA
Beam Angle 120 degree
LED Quantity 2 LEDs
LED Type 5050 SMD
IP Rating Weatherproof IP65
Housing Color: Black
Dimmable: YES; Rheostat or PWM Dimmer 
Note: Not FAA/PMA approved. Intended for use in experimental aircraft only.