Same for me. Go across the top of the A post, tucked into the join and then down the door opening under the rubber. On some models, there is a panel on the end of the dashboard which you can access when the door's open. You may find fuse box or power supply in there as well.when I've fitted dash cams, I'm managed to tuck the wires in under the edge of A post trim without completely removing them, likewise the head lining.