Standalone Sensor and Interior Loom

  1. #1
    Car: Saxo Ph2 VTR
    Engine: P1 VTS
    Induction: Jenvey Throttle Bodies
    ECU: Mtech V4
    Ford Coil Pack
    Clio 182 Injectors
    Sensors running are:
    Intake Air Temp
    Coolant Temp
    Lambda (Wideband)
    Crank Position
    Throttle Position
    Knock Sensor

    Interior Loom I have
    Speed sensor
    Reverse Gear Sensor
    Tachometer (RPM)

    Trying to figure out the following
    Radiator Fan on plug there is a 12v positive, 2 wires that ran to old ecu, a wire that runs to interior loom and a wire that runs to dual relay. Which ecu wire gives me signal to activate it?
    Fuel Pump ( have it from dual relay, under ECU tray over to fuel cut switch)
    But stuck on the fact it primes as soon as battery is connected ?

    Also what are all the other wires on the interior plug.