How do I properly connect the battery charger to my vehicle's battery?

First, turn off all vehicle accessories and keep the hood open. Clean the battery terminals and set the timer to OFF. Lay cables away from moving parts, then connect the battery following specific instructions for negative or positive ground vehicles. Connect and disconnect DC output clips only after setting charger switches to 'off' and removing the AC cord from the outlet. When disconnecting, set the timer to OFF, disconnect the AC power, remove the clamp from the vehicle chassis, then remove the clamp from the battery terminal.