the brake light switch on my skoolie went bad. I have hydraulic brakes. if you lay on your back and look under the dash at the brake pedal, you'll find the switch....if you have hydraulic brakes. You might even find 2 of them. One for the brakes, and a separate one for the electric/hydraulic backup brake booster.
Quis custodiet ipsos custodes (who will watch the watchmen?)