Take a look at the picture I posted of the wire with the finishing nail pushed through it in my above post. That is the wire you need to tap into to power your LED back lights. It's smaller in diameter than the rest of the wires in the harnesses for each unit in the console (climate controls, window switches, etc). You also need to tap into a ground wire or run your own to a hard point on the body. I choose to run my own. Just take your time and use a volt meter to check the wires, remember to turn your Jeep's power on to the interior lighting (just to turn on your auxiliaries and running lights, no need to start the engine) so that the power will be running through the wire.
-Matt