How do you get the dome light wire up or down the door post?,I work at it for about 1 hr and could not get it more than 2 ft down the post. Took a mirror and light looked down the post, looks like there is a plate blocking it off. Had to remove the old wire because of mice eating the insulation. I forgot to look to see how it was run before I removed it, my bad. HELP 53 3100