When using ZN151 for connection to the ECU, the following connections should be made:

CB403 (CB401) Yellow cable (B+) < - > B+ of the ECU

CB403 (CB401) Orange cable (IGN) < - > IGN of the ECU

CB403 (CB401) Black cable (GND) < - > GND of the ECU

K7 socket (green cable from the ZN151 set) <-> K-Line of the ECU (also called Data signal cable)