Remove the battery and you will find a rubber nipple that you can cut to feed a wire through. I ran a 4ga power wire through there. I also fished a small wire from inside the fuse box into the cabin. Pull down the carpet on the pass side and put a bright light way up in there then remove the fuse box cover and close the garage door and turn off the lights, You will see a route for your wire. Sorry I don't have any pics.