I have a 6 x 4 John Deere Trail Gator with a short in the electrical system. Any Help?

Voltage light on when running. I have disconnected all the power accessories, and the light remains on when running. The battery does not seem to hold a charge, it is new since the problem surfaced. I have the Kawasaki 2 cylinder gas engine. All electrical terminations seem to be secure. Any ideas?