Well, it's wired exactly as described in the wiring Diagram for the S40.lumley32 wrote:something is very wrong with your setup!
the coil drivers clip the current to 9 amps, i have run several race bikes with coils drawing that much (well they would draw more if they could) and never even had the ecu get warm!
check the coil wiring are you 100% sure you have the correct setup for your coils?
Ford coilpack has a 3 pin connector and connected as follows:
ECU pin 3 to coil connector pin 1 (Coil 1 cyl1 & 4)
ECU pin 6 to coil connector pin 3 (Coil 2 cyl2 & 3)
12v ignition feed to coil connector pin 2