[b3lha]

Hi Drivfour,

Assuming that your two-wire sensor produces the same number of pulses per revolution as the sensor in the Aussie car, you can use the TCU to convert the output into the type of signal that the three wire sensor produces. You need to connect the signal wire to pin a17 of the TCU. The converted signal will come out of pin c6 and needs to be fed to all the places the original signal went.

This is what I would try: Connect your speed sensor to the Black/White and the Yellow/Red wires from the original speed sensor. Then inside the car, find where the Yellow/Red wires comes through from the engine compartment. This point should be before it branches to the speedo, cruise etc. Check you've got the right wire with a meter, cut it there and extend both ends down to the TCU. Wire the end that comes from the engine compartment into pin a17 and the other end to pin c6. These pins are unused on JDM and USDM cars, but from looking at the board, they do seem to have the circuitry behind them.

You will know if it works by if your speedo is working. If it doesn't work, the alternative is to use the Legacy TCU. I am concerned that the sensor in your Legacy 4EAT could be measuring a different shaft to the one in the Aussie SVX. Is the speed sensor located inside the gearbox, or the front diff? Do you happen to have a Legacy service manual?

Phil.