Well, my mirror cover for my right side mirror delete has flown off while heading to
Yankee Lake Truck Night and when I got home, I decided to make it permanent. I made another cutout of the original cover posted on page #2 of this thread and decided to screw it to the body instead of using silicone.
I pre-drilled two holes in the metal support behind the mirror mount..........
I then used 2 black sheet metal screws to attach the plate firmly in place.......
I was going to use silicone on the cover to seal up any gaps, but after installing the cover, it looked good enough for me...........
Now I no longer have to worry about losing my mirror delete cover since a replacement will never go in it's place.