Diagnosis
So we need to work out what is at fault, first off its important to work out what is causing the symptoms. This means removing the tail light and seeing if the bulb has indeed given up the ghost or if something else is at fault. Its very simple to remove the tail light, you need to open the boot which reveals two philips head screws along the inner edges of the light clusters.
Once you've unscrewed these you need to pull the cluster out, its relatively easy you might need to lever the outer side of the cluster out with a piece of plastic. And pop, out the light comes, don't pull it as the multi-plug is still connected.
Just push the bottom of the plug upwards while you pull and it will pop out.
Now to get at the bulb there are a further two philips head screws.
You need to loosen these and then the back of the light cluster will pull off revealing the three bulbs, set the other part of the cluster down you don't need it again until we reassemble.
NOTE: If you are unlucky like me and the rubber gasket between the two halves of the cluster comes apart -
Then you just push it back into the groove using the end of a screwdriver or something similar and it will just seat itself back in. If you cant get the ends to line up you can cut it to fit but its fine to overlay slightly you just need to push the two halves of the cluster together a bit harder when you reassemble it.
