I'm pretty sure MK2 don't have this connector.
The MK2 arm rest has many differences with the MK2.5. The MK2.5 has:
1. a cigarette lighter under the arm rest
2. a cigarette lighter or a start button on the console top
3. a weird electronic part under the console (antenna or something)
4. USB and AUX under the arm rest.
All those connect in that plug.
The MK2 has none of the above.
You will have to wire the cigarette lighters directly to a power source.
You can probably piggy-back your current cigarette lighter. You might have issues with the fuses, however i find this unlikely since people sell 3-way cigarette light splitters.
Just waiting for some suitable cable to arrive and I'll knock a cable up for you.
Please give me a nudge via P/M towards the weekend in case I forget what I'm supposed to be doing.