Custom install of Tom Tom into current Galaxy. How to wire?

[starmist]

Hi,

I've just bought a Tom Tom Via 125 for a current model Galaxy and have installed it quite neatly under the lid of the pop up storage box on the dash top. I'd like to run the cabling behind the dash but I'm not sure where I can remove panels from the dash to gain access. I'll need to fit an in-line cigarette lighter behind the dash, wired into the existing one, and plug the charger into that, running the cable up into the dash top storage compartment.

Any advice?