Multiplexer circuit for Toyota A340 to MicroSquirt

Using a MicroSquirt to control a Toyota A340 can be a bit intimidating - instead of wiring the shifter inputs straight to the control unit, the manual tells you to build a circuit to convert the six shifter inputs into three selector signals. This board from Detroit Technical Media offers the circuit ready to go with a Molex Mini-Fit connector (mating connector and pins included). Perfect if your project calls for a Toyota 2JZ-GTE or 1UZ-FE and the stock transmission, but not the stock electronics.

Assembled in the USA from imported components. The enclosure is 3D printed in Turkey.

Wiring note: The second gear signal does not connect to this box. The drawing shows the Toyota transmission gear switches as a unit, but usually the Overdrive Cancel button is separate.