Anyone know a easy place to splice into to get switched +12v from under the drivers side on an 06 X S?

I see a few wires that could be the solution (the big red one going into the loom that feeds the drivers door?) but haven't explored. I don't need much current, just powers down a step down 6v transformer for a Delphi XM radio. I'd love to find the wires that feed the swiched lighter sockets but don't really want to pull out the dash...yet. Thanks.

How about the one on the arm rest? Should be easyer to use thoes wires than the ones in the dash.