Ignition switch plug and wires

[Blaze0010]

In my rebuild i'm currently sorting out the wiring and i have came across a slight issue with my ignition switch plug.
I've purchased a new ignition switch from Japan, and i'm using a dashboard harness also from Japan, but there is a mismatch in the wiring.
The pinout of the switch is exactly the same as in the Wiring diagrams manual, wires color are the same and i've checked the continuity as stated, all is good.

The problem is in the connector from the dashboard harness. The "top" row (AM1 - ACC - IG1 - ST1) everything is correct, +12v arrive from AM1 and when i turn the key the starting motor activate.
In the "low" row (AM2 - IG2 - ST2), on the harness side, i have only 2 wires, one white and the other black with orange stripe, while on the switch side i have 3 wires, one brown, one brown with white stripe and one brown with red stripe. This second row seems completely isolated from the top one, and do not receive voltage in any key position.
I've figured it out that the white wire i have, when voltage is applied, give power to the headlights motor, but i don't know what else, while the black orange, i have no idea, could it be related to ignition coil?


I could maybe splice the AM1 cable into the AM2 one, to feed also the low row and have voltage on both the white and black orange wires but only with key in ACC or ON position.
Does it make any sense?