How to install extra 12V plug

I couldn't find old threads that talk about this, so let me ask the question anew. I'm trying to install an extra 12V plug by tapping into the one in the center console. But I'm not sure which wire(s) to tap. Is it the white with black stripe that's hot? The existing plug is connected to that one and a small grey wire. There's no ground wire, apparently. Or am I missing something?

 

Thanks for the correction. Yes, I meant receptacle (or socket).

I'm trying to tap off the one in the center console. I don't see any green wire going to that receptacle. Only a grey one and a white/black one. Is the grey wire for ACC mode switching?

 

Here are some pics I took of the 12V connector behind the center console.

 

At this moment I don't know which wire to tap. Hence the original question.

It doesn't appear that the center console's 12V jack has the same wiring as the one under the front dash.

BTW, the picture shows what the bottom of the console looks like, looking upward. The square receptacle at the top is the Aux jack.

 

Understand. I wasn't trying to install an always-on socket, but one that'd only get turned on when in ACC or IG-ON mode. I tried tapping that white/black wire but nothing happened. Guess the simplest way is to get a Y adapter. I just hate having cables all over the car.

 

Do you remember which wire it was? If not, could you (when you have some time) pop off the cup holder in the back and take some pics? Would like very much to also see how/where your installed the outlet itself.

Thx!