I am curious as to how everyone else has there airflow sensor hooked up, I have the wiring diagrams that numbchux set me up with from a 92' legacy but they are different from what the wiring diagram is for a 90' Legacy. Also, i am wondering how everyone has there ignitors set up, and what exactly does this thing do? The grounds for the ECU A10, A11, A21, A22, B1, D14, D15, and D24, D25. Do these need to be grounded to the motor or just grounded (like to the strut tower?) On the engine harness one of the gray plugs is all black grounds, where do they go? Do i need to hook them up to certain things? I am really regretting just tearing this harness apart and getting it so screwed up. And the only code my ecu flashes is a water temp signal wrong code. This car just cranks and cranks, doesn't even try to start, i have fuel, don't think i have spark? But most of all i have a headache haha:confused: