Planning on popping off the A-pillar in a 2016 to run some dashcam cables. What clips should I buy in order to replace?

Looking at: https://www.hondapartsonline.net/v-2...pillar-garnish

I need one each of part 20, 21, and 22. Is this correct? Any reason why part 21 is missing here?

 

You can gently pull out the a pillar enough to run your wiring. You won't be able to completely remove that cover off because it's designed that way. There IS a way to remove it which involves some deliberate steps.

 

I only had to replace one clip when I pulled mine for the same reason. Found a pack on Amazon.
It looked like this: