Show how to replace belts 85 Pontiac fiero?

To replace the belts on an '85 Pontiac Fiero, first disconnect the negative battery cable for safety. Loosen the tensioner pulleys by turning the adjustment bolts to relieve tension on the serpentine belt, then remove the old belt. Install the new belt following the routing diagram usually found on a sticker near the engine bay, ensuring it's seated properly on all pulleys. Finally, adjust the tensioner back to its original position and reconnect the battery.