No start

[rush91]

I went to go start my Beast and this happened..... I take the battery out and bring it inside the house. So i put the battery back in, all connections tight. I turn the key and hear everything buzz and make the noises we know... i turn the key to start it and everything goes black. No dash lights, no interior lights.... Battery is fully charged. I disconnect the cables and reconnect. Go back in to start, i have dash lights, good voltage. Go to crank and goes black again like the battery is dead. WTF is going on???