I just opened a Gewa G9 14" cymbal to see what's inside, it was pretty easy since it's just 10 screws on the bottom side of the cup, this is a 3 zone cymbal with one cable only à la yamaha, it also has another jack to use it with roland cymbals as 3-way ride, connecting the bell output to an aux input of the roland module. It has 3 piezos and 2 ribbons for the edge switch and choke. Attached a pic, can you decipher the wiring?