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2004 Wagon Rear Spoiler Installation; Illustrated Step-By-Step
In a previous thread I picked up an OEM rear spoiler for my GS trim 2004 wagon. Here’s how I installed it.
When I removed the spoiler from the parts car, I took the time to make a paper template to mark out the factory holes.
The factory install includes two oblong plastic retainers into which are inserted matching posts on the spoiler; not wanting to make any more holes than I absolutely had to, I elected not to add these to my install and snapped the posts off the spoiler. After several days with it installed, there’s zero rattles from the spoiler, so I don’t think not using those posts really had any negative impact on my install.
After cleaning up the spoiler which had obviously been on the donor car for 14 years, I added 1/4” closed cell foam weather stripping (neglected to photograph this step, but it’s obvious where the seal needs to go based on where the old strips were).
I laid the template I had made onto my car, taped it down and marked the hole locations with a silver Sharpie before using an automatic center punch prior to pulling out the drill.
Once marked, I drilled a smaller pilot hole first (1/8”) then drilled out the rest of the hole; the outer bolt holes are 5/16”, the center holes are 3/16” and the wiring hole which has a grommet on it is 1/2”.
Once I had all of the holes drilled, I swapped the third brake light connector; the interior-mount light and the spoiler light have different connectors, so if you salvage a spoiler from a donor car, make sure you get the connector. The connector splices were soldered and shrink-wrapped before everything was all closed up.
That done, it was time for a test-fit. Having made a template on the donor car paid off with the holes all lining up.
After ensuring the spoiler was square, I complete tightening up the bolts on the corners and the nuts in the center and snapped in the upper trim piece that I also took from the donor car (the trim piece in a car with the interior third brake light actually houses the light fixture itself, so using the flat trim piece makes for a much cleaner installation). The cutout in the black paint on the inside of the rear window that accommodates the interior third brake light is virtually invisible after this swap, both from the exterior and in the rear view mirror.
And there you have it. I don’t think anyone who doesn’t know it didn’t come from the factory with the spoiler installed would be the wiser.