M150 Wiring Ignition Switch Help

[ttrx7pete]

Hello!

I’m new to MoTeC and I’m currently wiring up a a m150 to a 94 JDM Supra with 2jzgte. Car does not have a PDM and want to wire up with OEM Integration. The issue I’m having is how to wire the ignition switch and 12V power to the ECU. Factory ECU uses a constant 12v battery, ignition switch input, and key on triggers a 12v signal to the main relay which then supplies power.

In m1tune I cannot select ignition switch as an input. I had planned to run the key to a uDig, then use the HBO high side to activate the main relay and supply power to ECU and sensors.

I’ve also thought about just wiring the ignition switch with a 10A diode to a 12v power pin c26 I believe, and then do the same HBO etc.

Just want the ECU to have factory power and hold ability.

Thanks in advance.