Improper Electrical Wiring
This was the wiring that the homeowner strung from the second story of the house (maybe off a bedroom circuit?) to the garage, which was about 40 feet away. Not only are the wires through the steel siding dangerous, there is no support for the wire. And how about that wire wrapped loop at the insulator. I recommended that an electrician remove this wiring and provide a safe solution with proper wire, support and terminations.