In this LED cabin light test, Practical Sailor looks at 17 light bulbs from seven manufacturers. The LEDs were tested to see which was the most worthy replacement for a 20-watt xenon bulb in a bulkhead-mounted reading light. Testers measure LED beam angles and intensity, LED power consumption, LED color temperature, LED radio frequency interference, and LED reading and cabin illumination. The LED lights tested include: Alpenglow TR LED complete brass fixture; three lights from Cruising Solutions; three lights from Doctor LED; four from Imtra; two from Opto Technology, two from Daniel R. Smith & Associates (DRSA) manufactured by Mast Products; two of Scad Technologies’ (Sailor’s Solutions) Sensibulbs; and one…