If there is moisture, make sure the connection isn't corroded. Also, when you put it back together, make sure to use dielectric grease on the connection. That will help prevent issues with the connection and corrosion.
I looked up the schematic of the brake light switch based on the production date. It is attached below. It is very vague.
Let me know.
See pic below.
Saturday, May 8th, 2021 AT 7:39 PM