hey all, im making an adaptor loom using the plug off an old ECU with wires down to another loom plug and inbetween ill add the EMS ECU, but i have no idea what wires the factory ECU still needs to run the gearbox.

obviously the TPS will be needed, does the TPS put out enough signal power to control the EMS and the factory ECU? or do i need to adapt an EA MPFI style double unit?