I'm having trouble connecting my battery to my 1969 Camaro

[monmon030791]

Ok I really need help I feel stupid for asking this. I just bought a 69 Camaro and the battery needed a change so I changed it and I also changed my ground wire to a bigger gauge I mounted it to the block instead of mounting it to the alternator. So now I have my new battery in, my ground is connected to my positive and I connected the negitive but I dont know whats going on all my wires except 1 wire can touch the batter with out doing sparks and getting real hot. I just need help connecting my battery and make my 427 horsepower car start I feel so stupid for asking this. Sorry guys.