"Race" style kill switch designed to plug directly into the race wire loom or can be modified to plug into the black and white/black wires on the original harness connector with something like a Scotch-lock connector.
I'd be sore after only 10 miles on the stock seat. The Seat Concepts comfort seat made a huge difference. Recently did 140 miles of mixed terrain and felt pretty darn good afterward. No more monkey butt.