Been running a G1W-C for a few years now. Got the rear-view mirror mount. On my previous car, I stuck a wiring harness kit up in the headliner and spliced into some permanently live 12V wires. For the Flex, I ran the extra long 12V adapter wire, tucked into the headliner, tucked into the A-pillar, and then Velcro strapped up under the dash to the passenger footwell 12V adapter location. Made for a quick, easy, clean, and cheap solution.