Yep those are the ones. Mine did not work as well, but that is because the bulbs were shot. Didn't really care to replace the bulbs seeing as I would likely never use them. I just cut out a piece touched my volt meter to it and it had power! (This was with the cargo lamp switch in the cab in the on position!!) Now every time I turn the cargo lamp switch to the on position the cargo lamp along with the pods comes on. Anytime the cargo lamp is on my pods are on. (That could be hitting the unlock button. Getting out of the truck after a drive, or simply leaving the door ajar.) So my advice would be to strip out a little piece of wire from the positive lead and touch a volt meter to it. Just put the ground wire on a bolt in that vicinity. I would assume that if your cargo lamp is working that those wires should be getting power. It could just be the bulb socket itself that has gone bad.
Also in order to get to the meat of the wires all you need to do is just lower the tail gate and unbolt the two bolt that hold the taillight in. Then just trace the wires back to the socket.