Brake lights do not work

I do not have access to a wiring diagram, but I can offer some general hints. At the brake light switch, with the ignition switch off, check for twelve volts feeding at least one wire. If that is missing, we need to go back toward the fuses. If you have that, check for twelve volts on a second wire only after pushing the brake pedal.

If you have that twelve volts on the second wire, the suspect is the turn signal switch. This applies to any vehicle where the brake light bulbs are the same ones that are used for the turn signal function.