RotaryPower27

So as i have posted before my s4-TII ~>S5 N/A project has hit a bump. To get you up to speed, everything in the car works starter, lights ect, but no spark and no injector pulse. I have checked and replaced all the fuses, and got a new ECU still nothing. I was looking over the FSM and noticed that the signals comming from the CAS are inputs and not outputs. Where is the CAS getting its voltage from to send a signal? Also, what makes the injectors fire. I was checking over the leading ignitor, i get 12v from the plug but what actually signals this to pulse. Anyway any suggestions on where to look next or maybe something else to check would be great. Thanks