https://youtu.be/TWxhgzGydHA?si=Vo3he8jaUFjPnwj2Rear-brake-light switch on a 2007 Bullet. Applies to previous years too.
Hope nobody else gets a problem with the rear-brake-light switch not working, or causing a short circuit when the brakes are applied. Anyway, if this is ever of help...
The front had broken off the cover, as shown, so the internal spring had nothing to push against. Scrap
An old one was used which had a broken screw-fixing hole. So I made a metal plate to go under it all.
The front of the plate bends up so that the front can push against that, thus strengthened. Also the fixing bolts screw into the metal plate. It's normally very difficult to get a screwdriver inside; this way, the nuts can simply be done/undone from the outside.
NOT SHOWN in the video is an electrical problem, INSIDE the switch:
The connector's insulation had failed, so that every time the brake was applied, power was flowing from the switch to the sliding bar, and via the HOT! spring, to earth. Not good...