Do you have a breaker under your seat?
Are all of your connections tight?
Are you sure everything is connected to your battery? Don't get offended, it happened to me! One of my cables had slipped down out of sight while pulling the battery.
Did anything arc when you cracked your terminal? Could have blown a fuze or tripped your breaker.
Check your ign. switch. All the wires good?
Shoot a PM to NightTrain, he will get you running.