if it is the top hi viz lamp,if you open the tailgate I think there are two slots behind the lamp and a couple of spring loaded clips which a small screwdriver will help release the clips and the lamp should pull out,can`t remember the part no but it is a large capless bulb,if it is on the side of the motor then there is a large plastic wing nut accessed in the boot area at the lower end of the lamp and I think a couple of Phillips screws up the side,then the whole lamp should pull off the body for access.
cdc
September 2013
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.