Wiring was a breeze, one screw for the front panel, schematic on the back. I read the instructions, but they put all the relevant information on the unit itself, so you can't avoid doing it right. Saw a lot of reviews saying this smoked for many hours on first run, my unit smoked for about a minute, and then it was good. Got to temperature quickly, held. I really can't stress enough how pleased I am with this. Shipped quick, arrived early, and works great!