The ECUMaster CAN bus expansion module plugs into the 5 pin serial port on the standard EMU and adds the capability to communicate over CAN bus, as well as adding 4 analog inputs. CAN bus allows for communication with other expansion modules, aftermarket racing dashboards with CAN bus, many factory gauge clusters, and aftermarket gauges such as the BTI CAN gauge.
DOCUMENT LINKS:
EMU CLASSIC CAN BUS EXPANSION MODULE 6 PIN WIRE DIAGRAM