Engine interface cable for c10

[Stevenosnato]

I just bought a Suzuki engine and a c10 gauge. The interface cable has 2 connectors. I know one connector goes into the engine diagnostic port which is the 4 prong square one but I can’t seem to figure out what the smaller connector is for. Is that for a different engine or is there another port somewhere I’m not seeing that it goes to?

 

[Libelle]

Hi Stevenosnato, the 2nd interface connector is not used in my configuration. It is also shipped without a terminating plug