i ran a wire from behind the 12v socket in the center console, i ran it up and over the glove box, I mounted my 5v converter behind the side dash access panel, then ran the 5v connector up the a-pillar and then removed the dome light and the passenger side visor and that gave me enough wiggle room to run the wire and mount my dash cam to the rear view mirror.
to mount my dash cam, i used a bicycle handle bar mount. the homelink mirror shaft is big enough that it securely mounts perfectly and the camera hangs just below the mirror, which is what i wanted so i can verify the red light on the back to know that its recording.
i installed the same camera in my friend's soul, he didnt have homelink which means the mirror shaft was smaller, so we just a piece of vaccumm rubber belt to take up the slack, it worked pretty well.