Installing the hardwire on panels 1 and 3. It goes on the inside side of the panel.
I predrill holes for all of my screws. It prevents the wood from splitting and makes the screw go in straighter. The drill bit should be narrower than the shaft of the screw, excluding the slanted screw element.
In fact I use 2 drills. 1 to predrill and the other to drive in the screw.
Be sure the screws are going through the hard wire.
Cut the 2 remaining 5/8 plywood panels so they are 7 1/2 feet long. If you want your coop to be bigger and don't need or want roof overhang you can skip this.
Cut 1 of the panels down the middle so you have 2 2 feet by 7 1/2 feet panels. These are the sides.