On the back if you strip the ign switch down you will find the resistor that no one knows about. A security measure that the repair manuals do not cover. It measures 100 ohms and is in line in the power circuit to the ECU to stop hotwiring the bike.I have used 4pin gsxr ignitions wired up to blandit looms by fitting a 100 ohm resistor into the ecu wiring a few times in the past.I`m no electrics expert,i found it all on the interweb ages ago.