I used the footwell wiring that is connected to the overhead switch panel and then used the fuse jumper that comes with the wiring kit in the fuse panel beside the steering wheel. It is easy to run the wire under the trim below the steering wheel across to join the power wire and run both up the A pillar. I did the install myself it’s not overall hard, the only bits that caused swearing were reinstalling the INEOS rear door table which is way more fiddly than it has any right to be and heavy. And the hardest bit I found was getting the wires through the rubber boot between the body and the door.