brake light switch location for replacement?

I found the brake light switch replacement instructions with diagrams. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Car would start but wouldn't switch out of park. Figured out how to get around that, but brake lights are not working. Manual says check fuses. Checked fuses, all good. Replaced many anyway.Someone mentioned it was probably the "brake light switch." Is this something I can find/replace/buy at an auto parts store? Despite the mileage the car runs great...but without brake lights I'm dead in the water. My mechanic recently retired...and my options are few if I "take it in" for repairs. The only guy nearby who does half decent work also has never let me go for under 600 bucks.

Brake ON/OFF (BOO) SwitchTop of brake pedal support. See Fig. 4 .