Originally Posted by Mookie Brown
Those things may also be true, but when I've had the charger on the batter, and it remains on the battery I can't get the radio or anything to turn on.
Well ok then..... Can you find the main ground on the engine?
Edit: First figure out if the ground is your problem. Take a set of jumper cables and clamp one end on the neg battery terminal, then run the other clamp to the exhaust manifold. Does everything work? That should tell you if you have a ground corroded or loose somewhere for sure, then you can track it down.