How do you replace the side marker lights on XJ8?

To replace the side marker lights on a Jaguar XJ8, first, locate the marker light assembly, which is usually found on the front fenders. Use a flathead screwdriver to gently pry off the assembly or remove any screws holding it in place. Once removed, twist the bulb socket counterclockwise to release the old bulb, then insert the new bulb and reassemble the marker light back into its housing. Finally, test the lights to ensure they are functioning properly.