The car won't start. It also has no signal lights, radio, fan, Brake lights or any lights at the rear of car.

I have a 2007 Camry LE 2.4l automatic transmission, approx 120,000 miles. The car won't start. It also has no signal lights, radio, fan, Brake lights or any lights at the rear of car. The only things that seem to work are head lights hi and low beam and everything on the dash board appears normal and the chiming when the key is in the ignition and the door is open.

Back ground events the serpentine belt broke as my wife was leaving for work about a block from home she turned around and made it back home so I got a new belt an while installing it found the water pump bearings were shot so I put on a new water pump with the belt and went to start the car and nothing happens except the dash board lights up and the little chime starts chiming and I am able to turn the headlights on. During the water pump installation I removed the negative battery cable along with the upper motor mount and the alternator to make room for the new water pump and belt everything went back together smoothly.
I think I still had the key in the on position in the ignition when I pulled the battery cable off because I saw a small spark between the cable end and the battery post.