Yesterday I finally got around to Installing the two plastic strip holders for the rear bumper , anyway it goes like this the way I found the easiest was to take the two plastic strips and push them on first making sure you have the little plastic pins in the outward position so when you hit the actual rubber strip on with a rubber hammer , it will lock the ends in place. Spray some light silicone lube on the inside of the rubber strip and starting from the center hit firmly with the rubber hammer working to each side snaps in place. Thats it , hope this helps someone who has a loose bumper strip.

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A couple of Ford pickups F 150,250, 350 missed.
1983 240 D 256,000 miles ,auto, ac.