I saw this and thought of using a microcontroller with high brightness LED's and sync the fire sequence with one coil or a sense lead off a plug wire. To keep the electronics (Basic Stamp) cool I planned on using fiber optic cable to the stacks under the tank. The main controller would fit under a side cover. Banged out the code then suffered a hard drive crash. Lost interest in it. This rider had some drawings on his/her design somewhere on the net. Hope the clues help you.