Buddy has a 92 civic mt sedan won't start. Cannot hear fuel pump at all. Took his main relay plugged it into my 98 civic and mine ran fine using it. Put in a new fuel pump still no fuel pump activity and no power to plug using voltmeter. His main relay clicks once when trying to start. Starter is turning fine. Is it possible that my 98 civic does not require something in the main relay that the 92 needs? Also can anyone tell me for sure which pins on the pump harness are + and -? There is power at the Mr harness with ignition on and off.