You can see the one cable is a rca/rca cable. The one with the pins sticking out on one end and the 'bulb' on the other end I believe is also rca on on the bulb side.
I bought this bulb part and some pins from MB (and didn't get any documentation or that extra rca cable) but didn't get it installed as just pulling off the front faux wood panel seemed to be a bit more force required than I was comfortable applying.
Those are not RCA plugs. They are 3.5mm TRS connectors. Not the same thing.
The wood front panel is held in by four spring clips. The best way to remove it to first remove the cigarette lighter tray below, and then pull firmly on the bottom of the wood panel. It will not break, it is very solid. The spring clips will probably slide off, and they will fall down behind. Difficult to find them then.
To charge the ipod, you can just add a separate docking cable. Some of those also have a 3.5mm jack on the other end to bring out analog audio, so you could tidy the audio cable away and just have the docking cable attached to the ipod (as opposed to having an extra cable plugged into the headphone jack, which looks clunky).
This is probably the best way to hook up an ipod to an older Comand. There are some third-party adapters out there that let you control the ipod, and I have owned some of them. They aren't that great really. Cheaper and easier to just use the ipod controls.