E10 LED Adapter (Remix)

thingiverse

I've remixed Modellaner's clever LED to E10 - Adapter to feature a cavity for a 1/4w bias resistor mounted internally. His design suited lamp fittings that come apart easily, but this one will work with lamps that only allow access to the globe in its socket, not inside the fitting. For 6v use a 270Ω resistor, soldered to the LED's positive leg, then feed the resistor and positive leg down the hole, then bend and trim the ends according to Modellaner's instructions. Trim the resistor and LED leg very short to join them. 3v supply: Use 100Ω resistor, 4.5v supply: use 180Ω resistor, 6v supply: use 270Ω resistor, 9v supply: use 390Ω resistor, 12v supply: use 620Ω resistor. At 1/4 watt, do not operate at higher than 12 volts!