This was done on a '05 ZX3. Other years, and models may be similar.
Radio, seats, and center console were removed, but are not included in this write up.
Trim removal tool
Power point socket
This diagram is from a '04 SVT. The diagram shows a OG/BK wire for the power side of the rear PP, and OG/YE for the front. My '05 had a OG/YE wire. We used orange without a tracer. Your wire color maybe different, as well as the fuse location.
Got a few parts from the dealer, but they started getting costly, so we used Napa power points instead.(not all parts were used).
The Napa parts came with covers; we used these instead.
Made up a harness, fished it through, and soldered it to the front power point.
...and put the PP sockets into this piece. We used the bracket that came with the PP as a template for cutting the holes.
...while my 10yo cut into the armrest support. (Wasn't rough looking when he was finished.) And, hooked up the other end of our harness. The metal bracket on the armrest had to be trimmed up a little, but we forgot to take pics, sorry. You'll see what needs to be cut when you try to put the rear cover back on.
The armrest is still sturdy, even after half of the support was cut away. And, now I don't have to listen to the kids complain that they can't play their DSs.