All lights working. Lights do not come on when brake pedal is pushed. No fuses blowed. We changed the brake switch and still nothing. Used a test light and have power in the brake switch. What else should we check? Thanks.

check the circuit board behind the tail lights... This has happend to my friend a couple of times

Thanks. We replaced that too. I think we have it fixed now. Found some broken wires in the wiring harness. Don't know how it happened. Maybe this will help anybody else having problems. Check wires too.