After many years your rear spoiler seals may begin to leak. This can show up as water dripping out of the cover when it rains or after you wash your car. This tip is also useful for those that need to repair or replace the third brake light or the rear wiper. It doesn't take very long to perform unless the old rubber seals are a PITA to remove. For me some were. You do have to be careful though in removing these parts that you don't break anything. Consider it taking 8 hours so you are not in a rush.

Side Wing Parts:   2x 90467-09075 Front Clip
    2x 90467-08064 Rear Clip
    2x 90560-06027 Rear Spacer
    2x 76889-14020 Front Pad
    2x 90999-91055 Inside Rubber Strip
    2x 90999-91056 Outside Rubber Strip
     
Spoiler Parts:   1x 76872-14050 Center Tip Pad
    1x 76895-14030 Center Rubber Pad
    1x 90540-20001 Wiring Cushion
    2x 90999-91053 Rear Strip
    2x 90999-91055 Inside and Front Strip
    2x 90999-91055 Outside Strip



Instructions
1. Remove the plastic trim
Remove the rear plastic pieces on both sides of the interior. Mostly because the barbs that hold in the wing side pieces are troublesome and this makes getting to them much easier. Also remove the plastic piece on the lift gate. These is attached by a bunch of metal clips and it removed by carefully prying it loose.
2. Remove the side wing
From the picture on the right you can see where it is attached in four places. The two screws seen from the outside can be easily removed. Then two barbs are more of a pain.
3. Removing the rear barb
To the right you can see the rear barb and how it fits with the clip. When the barb is pressed into this clip the two wings spread out so it can't be pulled out through the hole. To remove this you can remove those wings so it will again fit though the hole, or pry out the little bits so the barb is no longer attached to the clip. The clip has to pulled out though the top.
4. Removing the front barb
Between the two barbs this was the most difficult for me to remove. You can very very carefully just try to pry the whole thing out, but after taking one out that way and studying how it worked I found a better method. The cap has two tiny hooks on the inside that catch the spoiler barb when it is inserted. I found that if you squeeze the cap on the long side, so on the left and right side of the lower picture, it will let go. If this doesn't work you can try working the whole cap out still connected to the spoiler. Just be careful not to put too much force on the spoiler piece or it could snap.
5. Removing the spoiler
The spoiler is attached by two screws on the sides, 4 bolts on the spoiler's "feet" and the stickiness that the rubber seals have formed with the body. After you have removed the screws and bolts, whoes positions you can see from the pictures above and below, you should be able to separate the spoiler from the body. Mine took a little coaxing then it popped loose.
6. Removing the Wiper Blade
To remove the wiper blade lift the cap at the base to expose the small nut. Remove the nut and then maneuver the wiper around until is lets go of the splined shaft.
7. Removing the Wiper Motor
Using a crescent wrench remove the large diameter nut on the outside of the wiper assembly. Next disconnect the wiring connectors for the spoiler LED and the wiper motor. Then remove the three bolts holding in the wiper motor and remove the motor and the outside dohicky.
8. Remove the LED
This is done by using your thumbs to gently press the LED bar down and out.
9. Replace the LED seal
10. Replace the side wing seals
11. Replace the center spoiler seals
12. Put it back together
When putting it back together you don't want to strip anything so what I did was to put my weight in the part to compress the seal then I tightened the nut to be snug. Test for leaks then tighten more if needed.