My 2004 Maxima was purchased as a non-runner. The wiring looked like it was repaired by the Three Stooges. Windows don't work, neither does the trunk button on the driver's side door. The A/C is hard wired to turn on when you start the car. I'm getting a 2019 engine installed with a new clutch and rebuilt transmission. It's a Georgia car with minimal rust. Where might the pain points be to restoring this vehicle to #3 condition?