I was repairing a bunch of LED lamps for a Boy Scout camp and figure that I was tired of burnt out OBC bulbs, so I took apart some old bulbs and sockets and fit a reisiter and LED to it.

Had to fiddle with the installation to get the polarity right, but they work.

The only thing I'm not sure of is the dimming function...I think the voltage drop is too little for the LEDs.