??? This plug is behind the drivers side seatbelt
 

You use that when you fit a hardtop, it's for the rear window demister.

Hmmmmm,

that's right, that's for the rear defogger.
And I am pretty sure you have the defroster button on the dashboard (right side on the horseshoe - as it also operates the defroster on the mirrors)
That would mean that you now have a power source with an easy to operate switch on your dashboard. The only problem is that it will be a ******************** to route a cable from there to the front....

It was quite easy to route a cable. I fitted rear speakers to mine, just take the plastic cover off the door sills and remove the trim over the seat belt.

If you just need power, it's easier to take it from the fuse box though.

And how can i get power from the fuse box?

Batman, you could - but everytime you wan't to turn on your LEDs (:rolleyes:) you will also be running your de-fogger. Not sure that's the best option!

Why don't you just source a direct connection from the fusebox as Nimbus mentioned.

Search or post an appropriate thread, therea number of guys on here that are very good in that area i.e. Nimbus, Partialwave to name but two. All very clever and resourceful guys.

Go back to your earlier thread :

http://986forum.com/forums/general-discussions/45551-power-up-blank-switches.html

ChrisZang and Aknowles already provided a decent option using the phone accessory cables and a blank rocker.