Where to hardwire TomTom


I was thinking about buying an extra charger and suction cup thing off eBay for $25 to hardwire it into my car and keep the elements that come with it for travel purposes.
I want to mount it to the left of the HUD, and not have wires draping all over the place.
Where would you suggest hard wiring it (Assuming that the travel charger is just a pos/neg wire and can be hard wired)?


