How do you install a bypass pulley on a 1990 Oldsmobile regency?

To install a bypass pulley on a 1990 Oldsmobile Regency, first, disconnect the negative battery terminal for safety. Remove the serpentine belt by loosening the tensioner pulley with a wrench, then take off the old pulley if it’s still attached. Install the new bypass pulley in place of the old one, ensuring it is securely fastened, and then re-route the serpentine belt over the new pulley. Finally, reconnect the battery terminal and check the belt alignment before starting the engine.