What does seat pitch mean?
Simply "the distance between two corresponding surfaces" so, on standard seating of 29 inches, measuring from the back of the seat in front of you (at knee level) to the same spot on the seat you are sitting in is the pitch. Try it at home , and you will see, there is not a lot of room to get your legs into. Don't forget the thickness of your seat is included in the measure…
Your fasten seat belt light stays on the dash in your 99 prism when your seat belt is fastened what does this mean if anything?
I assume you mean the pump for the convertible top. It is located behind the rear seat. Bottom cushion pops out (2 clamps at outer edges of seat). Remove rear seat back by removing seat belt plate at bottom of seat back and then lift seat back straight upward. Pump is located behind sound barrier flap at bottom of seat back.