So just to be clear, you should have the following connections:
Connect Pin 13 of the TCU to SV-EMS-220 Pin 34 (Low Voltage RPM Left Input).
Connect Pin 26 of the TCU to any of Pins 3, 5, 13, 16, 17, or 30 (Ground).
Do not install a resistor in the wires between the TCU and the SV-EMS-220...