ECU power - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DMC · 03-17-2006, 11:42 AM

I am trying to simplify the wiring in my car. There are 3 main harnesses;
-In car
-Around Engine bay
-ECU and engine sensors and equip.

I have figured out that the only harness the car should need to run is the one connected ot the ECU. But in order to eliminate the other 2 I need to rewire the fuel pump, ignition, and power to the ECU.

Would like to place power to the fuel pump and ecu on the same switch (because im afraid of what might happen if the fuel pump cut off while the car continued to try to run)

I understand how to wire up the fuel pump, thats easy. The push button for the starter is also easy. I just cant seem to figure out which pin(s) on the ecu needs power to it. I have stared at the FSM wiring Diagram for hours and have came up with like 5 pins that need positive, i have no idea if im right though so i was hoping someone could help me. Please help! I am very anxious to get this car running. THANK YOU!!

03-17-2006, 11:42 AM	#1
DMC Zilvia Addict Join Date: Jan 2003 Location: Chesapeake, Va Posts: 609 Trader Rating: (0) Feedback Score: 0 reviews	ECU power I am trying to simplify the wiring in my car. There are 3 main harnesses; -In car -Around Engine bay -ECU and engine sensors and equip. I have figured out that the only harness the car should need to run is the one connected ot the ECU. But in order to eliminate the other 2 I need to rewire the fuel pump, ignition, and power to the ECU. Would like to place power to the fuel pump and ecu on the same switch (because im afraid of what might happen if the fuel pump cut off while the car continued to try to run) I understand how to wire up the fuel pump, thats easy. The push button for the starter is also easy. I just cant seem to figure out which pin(s) on the ecu needs power to it. I have stared at the FSM wiring Diagram for hours and have came up with like 5 pins that need positive, i have no idea if im right though so i was hoping someone could help me. Please help! I am very anxious to get this car running. THANK YOU!!