Wiring diagram to replace an MKIII ignitor with a Mitsubishi ignitor with an AEM or similiar plug and play unit.
VB - 12 volt positive
GND - Ground
IB1 - coil output #1 from AEM (factory iGt wire)
IB2 - coil output #2 from AEM (factory iGda wire)
IB3 - coil output #3 from AEM (factory iGdb wire)
OC1 - output to coils 1 - 6
OC2 - output to coils 2 - 5
OC3 - output to coils 3 - 4
The iGf wire is not used by the AEM and can be reasigned at the AEM connector to be a LS#1 through LS#12 output to drive the factory tach through an MSD tach adaptor part number 8920 which can be wired up right at the ignitor by using the reasigned iGf wire and the original Toyota tach feed from the stock MKIII ignitor.
Once this is all done you will need set some parameters in the AEM. Parameters such as turning coils 1,2,3, and 6,7,and 8 on, turning the multiplexing option off, and then setting the igntion phasing, spark teeth, and coil dwell.