I mounted an 8' fluorescent fixture right on the upper section of the garage door. I ran a length of 16-3 SO cord....thats a well insulated, round, black commercial extension cord.....from the fixture, up through the ceing to my electrical junction box from where the other garage lights were fed. My door was 16' wide so I just stapled the SO cord right to the door after it leaves the fixture. Since your door travels up 7' pick a point half way on the doors travel, about three and a half foot out from the front wall of your garag, to poke a hole in the ceiling for the SO cord. This hole will have to be near the outer edge of the garage door track and the cord may/will rub on the track. You could cushion this with a piece of garden hose, duct tape, or any thing your imagination can come up with. The SO cord wont rub much. Mine has been installed for 20 years and I have had no problems. I have posted on here about this a couple years back with a picture or two, but don't ask me where the pics are now....have NO idea. Hope this helps. Before you poke a hole in your ceiling, you can attach a piece of rope to the edge of the door and run the door up n down and determine the best place for the hole. Good luck, you can do this.