Okay i know that its easier to use the stock si harness and change the plugs over but im going to use the obd1 B18b engine harness with a ecu conversion harness. I sold the si harness with the engine and trans already. What i need help with is where the engine harness plugs into the chassis harness on both sides of the engine compartment. I want to use the obd1 plugs on this. please help with pinouts of these plugs will turn this into a nice clean obd1 conversion thread with help. Thank you in advance.