Installing 12V lighter socket in blank dash button on A4

[dqa]

I've been using a cheap FM transmitter to to listen to podcasts while driving. Unfortunately, the way these devices are built, it is nearly impossible to read the screen when it's plugged into the A4 cigarette lighter.

I am thinking of putting a second lighter socket in one of the blank buttons on the dash. Probably the button on the far left, so it doesn't interfere with drinks in the cupholder.

1. Is there enough space behind the button for this kind of install?
2. Is the best approach to run a wire off of the first lighter socket down below?
3. Any suggestions on cushioning the wire? The last time I played with wiring behind the radio, the buzz/rattle of the wire against the plastic housing tormented me for years.

 

[spartan]

I did this recently for a similar product. I will try to get a picture and post it. There is not very much room behind it, and you have to pretty much leave about 1/16" on the edges so that you don't break the button in two.

EDIT: Here are the pics.