B-Pillar Protection (PPF or Vinyl)

Please refer to the video below:

Installing B-Pillar PPF or Vinyl

Tip: Install PPF in temperate conditions, between 60°F and 80°F (16°C and 27°C).

The kit includes a soap solution bottle — add water to it before use.
If you prefer to mix your own slip solution, use 5–10% dish soap (the cheaper the better) and water.
You can use your own isopropyl alcohol instead of the supplied wipes.
If the car is dirty, wash the area first. The alcohol wipe is only a final cleanse.

Wipe the B-pillar down with an alcohol wipe to remove grease and dust.
Clean the rubber gasket around the edge of the pillar as well — the film will almost certainly touch it.
Check you have the correct piece for the side of the car you are working on.
Spray the pillar generously with slip solution.
Peel the backing off the PPF, spraying the adhesive side with slip solution as you go. Go slowly around the camera opening, where the film is narrow at the sides, and guide it off rather than stretching it.
Spray a little more slip solution, then lay the film onto the glass area.
Line the film up using three reference points: the bottom line and corners, the camera opening, and the top edge. On the Model 3 the film sits slightly recessed behind the weather seal, which helps it find its position.
With the soft squeegee, use the flat edge to push out the worst of the slip solution. The film should still slide at this stage.
Make the final alignment adjustments, checking the bottom edge, the top, and around the camera opening.
Hold the film in place with a thumb and squeegee more firmly. Squeegee the entire surface, not just where you can see soap bubbles, or you will be left with bubbles once it dries.
Wipe the area down with a soft cloth.

Clean the B-pillar with an alcohol wipe as above.
Spray the pillar with slip solution. Vinyl can be applied dry, but the wet method is easier here because the surface is flat, and it lets you reposition the piece instead of getting one attempt.
Peel the backing off the vinyl. It is a little less stretchy than PPF, so still take care.
Lay the vinyl on and position it.
Squeegee every part of the vinyl. The adhesive has air-release channels, so full coverage is needed to clear both the air and the slip solution.

If you can, park the car in the sun. Even weak sunshine on the panel helps.
If not, park indoors and leave it overnight to set. Otherwise the film may bubble or shift.
In cold or wet conditions, protect the area from extreme weather until the film has fully settled.