wanna make it even easier on yourself? Take the little panels off the storage bins that are built into the floor right in front of the D pillars. From there, you get a straight shot to the bolts through some manufacturer cutouts in the sheetmetal. Take a long flatblade screwdriver and stick it into the back of the smallest 10 mm socket in your toolbox. Then just unscrew the nut. If you are careful, the nut will stay inside the socket as you're pulling it out. This works so well that I actually take the whole lamp off like this whenever I have to change a brake light bulb. It's actually faster for me to do it this way than try to reach my hand in there.