heres the skinny. just dropped my S4 turbo engine in and there is no spark. i check the wire leading to the leading coil and it had no power. i was told that i can get power from the fuses on the driverside strut tower. it now has power, but there is no spark. CAS? Could the ECU not have power when i crank it? i guess the main relay runs to the ECU and the Leading Coil. if the relay was messed up, i wouldnt have power to the coil or Ecu, right? Also where is this Main relay?

 

main relay is the big gold one in the left rear corner of the engine bay.



sounds like that might be it, all of the power goes into and comes out of that.