So I've got everything hooked up except for four wires. The wires going to the Datalogger, EMS/FIC and BLUE: low side (GND) which I know is the failsafe, I'm just not sure where to hook it up (boost cut, ignition or other options). Now i'm guessing that the datalogger, EMS/FIC means ECU for us? If so which wires would I splice them into? What do you think would be the best option for failsafe? Thanks for the help.