Its time for a new battery....my stock battery is almost dead...i will replace it with a group size 75 yellow top battery from Optima...I know this is sorta a dumb question...but whats the right way to change a battery when you have amps and all that hooked up to the stock battery...i have no 2nd battery...my power wire goes to battery under the hood..with 100A inline fuse...Do i 1st disconnect negative terminal...then positive??....then when i have new battery in its place I attach the postive 1st then negative....Im a little confused which is 1st and all that...any help will do...thanks