Walezy

I am right now swapping honda s2000 engine in my Fiat 131 Abarth replica. I have bought whole engine with wire harness that comes with the engine. The problem is that on the end of wiring loom where the ECM connectors are located there is one more connector that should go somewhere. Can anyone describe all the pins that are there so that i could make a new wiring loom that will be connected with it.
I have both Service manual and electrical maual and i am not able to find description of those pins. For sure one of those pins is starter motor but I have really no idea where the rest goes.
The other question is the immobilizer unit. There are two connectors, one is 5p with 4 wires and i know where they go(yellow wire looks to go to +12v ? ). The other has only 2 pins and i am not sure where it should be connected, can anyone help?(it is a green socket)

Walezy

The connector name is C101 in service manual.Hope this helps.