General Accessory socket/cigarette lighter

[Rustymini]

I have a 2005 Doblo Family. It has one accessory/lighter socket and one blank. I want to put in a second socket and have a genuine fiat one which has a 3 pin socket in it. Before I start rumaging around and taking the centre trim out, will there be a lead already there for it or will I have to wire it in to the other socket?

 

[RichDoblo120]

I would imagine the wiring is already there as alot of Doblos have a second power socket.
Ozzie or "T" might know for sure .