Remove the protective cover, remove the old bulb and discard, fit a new bulb, replace the protective cover.

Do you really think it's that simple? You need a complete circuit from the battery to operate the lights. Every vehicle has an owner's manual. It contains instructions for servicing the driver. You can also find out here about tail lights bulb siz and the purpose and structure of tail lights. I bought the tail lights bulb on amazon from a reputable seller and installed the bulbs myself.