Car won't start. Battery is good. Won't turn over no lights. Dead. Help

Hello, If the battery is good, yet nothing happens when you turn the key, you may have bad battery cables, battery terminals, ground, or bad connection to the power distribution center. Start by looking at our How to Clean Battery Corrosion page, and see if that is what the problem is. You should also make sure the battery is connect correctly, and that the terminals are contacting the battery posts tightly.