2003 Buick Century Owner's Manual - Page 261

To uncover the remote positive (+) terminal, squeeze the sides of the red plastic cap and pull the cap upward. You should always use the remote positive (+) terminal instead of the positive (+) terminal 1 your battery. An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 4. Open the hoods and locate the batteries. Find the positive (+) and negative (-) terminal location on each vehicle. You will not need to access your battery for jump starting. Your vehicle has a remote positive (+) jump starting terminal for that purpose. The terminal is located on the same side of the engine compartment as your battery. See Engine Compartment Overview on page 5-72 for more information on location. 5-44