No problem DVS, I simply had the boulder core drilled, approx 1" hole or so from top to bottom. I then used a diamond blade on a grinder to flatten out and level the area for the base of the light. I then drilled 4 holes for the base in the stone and used concrete wedge base anchors. Worked fabulous. The wire runs right out the bottom of the rock to the circuit hub. I didn't have to do anything with the sockets, I just simply used 12v candelabra lights. There are 3- 12watt lights in the fixture and it is plenty bright. It metered at 11.6 volts at the light which is right about where you want to run those candelabra type bulbs. I am actually going to replace the existing candelabras for flicker lights this spring. I think having it look like candle light in there would be cool.