MoTeC M84 M400 M600 M800 Untermed Harness ⋆ Fischer The wires are color coded and come with a pin-out list detailing the color and function of each wire. The harness comes with the ECU and Comms connectors already terminated and attached. This harness allows the end user to run and terminate their own harness for the following MoTeC ECUs: M84 MOTEC M84 ECU - Rywire Motorsports Electronics Rywire Motorsport Electronics specializes in wire-tuck (tucked), high performance, Mil-Spec engine harnesses. Rywire Brake Tuck, Clutch lines and Custom Radiators are popular as well. We sell & troubleshoot AEM, Hondata, Chipped ECU's, AIM Sports and MOTEC equipment.