Here's what i did for wiring.
1. Splice an extra 12V plug into the stock lighter wires behind the dash.
2. Plug the GPS lighter charger into that, and hide it all behind the dash.
3. Run the other end up out of the top center console to the unit sitting on the dash above the wheel. That is the only wire I see.
4. If I use it in another vehicle (rare), I just unplug the unit and use the computer cord with a USB/12V adapter, along with the suction mount.
07 Sahara Unlimited, Jeep Green Metallic