When changing a broken bulb in the rear combination light system, one will have to take out the six screws which stop the lens so that the lens could be removed. Find the bad bulb between the three using either not using the lens when operating the systems or looking directly into the bulbs; a blown bulb is usually characterized by broken or burnt wires inside the glass or an external damage. In order to remove a bulb, and also push it in then twist counter clock wise, the same principle applies to all the three types of bulbs: back-up light, turn signal, and tail/stop light. In case the whole combination light bucket is damaged or has found a significant amount of corrosion, it is to be changed. To accomplish this, remove it by pulling through the lens hole and unscrew all the connectors, making sure to record the color and location of the connector to put it back correctly.