Quote Originally Posted by tdkkart View Post
Not to step in and be the smart butt new guy, but your brake switch is mounted upside down, leaving a blind cavity above the main line which WILL hold an air pocket and make you pull your hair out. Flip the T and switch over so the brake fluid runs down into the switch and the air goes up.

Also, I've found that these switch last a lot longer if they're used to trigger a relay rather than switch the brake light power directly. Might not be as big an
issue now with LED lights that draw a lot less power.
Welcome, and thanks for the comment that makes a ton of good sense but is not obvious at first glance. I'm all but sure that my brake switch is mounted straight up, and while the tiny air bubble may not affect the overall system pressure much it's the reason that it takes a stronger pedal push to light the brake lights. I expect that there will be several "T's" being quietly flipped.

Great comment!