The measurements provided by the man who developed this pattern are perfect, everything lines up without any drama.
I reflect that I've had 45 years of lying under dashboards and if I never did it again that would be okay with me.
The CarQuest switch is a good fit and everything tucks away nicely. I need to add a better photo of the bracket and switch. The brake pedal arm is pretty narrow, it would be nice to have a little flat spot where the switch button rests against it.
I lightly tap on the brake pedal and the brake lights blink on - bliss. Now I can let those pesky tailgaters know they're too close without needing to stand on the brakes.