We used the prewired super flux. Just spliced the factory wire and put these in its place.
http://www.oznium.com/prewired-superflux
Some pics from ours that got archived
"I've had a few PM's from people asking about the LED's and what all we did, so I figured I would just post my process. Everything is powered by the factory courtesy light wiring, off of that switch, even what we added. For above the cup-holders, the Supras already had a small 3 LED unit above them, I removed this and just replaced with flexible strip. Wired directly in place of the old. Same for rear lockers, behind the driver seat locker, and the rear transom light. The only change to the wiring for the lockers was the ground wire was ran to the switch, and another ground from the switch back to the LED so when closed, the ground was interrupted and they shut off. "