The EV West CAN Bus Tachometer adapter will allow you to use your original positive ignition triggered tachometer with the new CANbus standard found on all new EV motor controllers. This features user-selectable termination, as well as compatibility with 2, 3, 4, 5, 6, 8, 10, and 12 cylinder engines. The firmware is currently written for the NetGain Hyper9 system, but this will work with all CANbus based inverters.