The T1 M1 GPS Harness comes terminated and ready to pair with your MoTeC ECU, with corresponding pin locations labeled on the four harness wires. If yours no longer has the labels or you would like to double check, the pin out for the Master ECU Adapter Box is as follows:

Red - Breakout Pin E01 - 12v

Black - Breakout Pin E08 - Gnd

White - Breakout Pin E33 - CAN 1 HI

Green - Breakout Pin E32 - CAN 1 LO