How do you replace a brake light relay switch on a Suzuki XL7?

There is no relay in the brake light circuit. There is a fuse . The only way they turn on and off is by the brake light switch that is located above the brake pedal on the steering column.

There are 2 relays built into the under hood fuse block (PCB - printed circuit board). One for brake lights and the other is for the horn. To replace relay you change the fuse block.