Xrt Rear Lights Working And Haynes Diagram

This is my take (copyright acknowledgment to Haynes) for the wiring diagram on a 2019 xrt. Just wondered whether there is an expert out there who can (a) explain how this system works and (b) confirm that the switch positions and relay position are not shown in the 'at rest' position - ie: no brake light on. For example, as shown, the brake light would be permanently on. In addition, it is difficult to see how the front brake switch works. I have assumed the descriptions 'both switches shown in off' position' and 'relay shown on'. This is for help with a future, envisaged project. Thanks for any help. (I should add that am an ex sparks so know how a relay works etc)