the plugs didn't plug into each other, had to chop etc, and put in vp ecu loom

it is a vn calais loom, with factory alarm, i have the interior light working with the door, when i arm the alarm and open the door (from the inside) it doesn't go off, nothing,, the siren is connected and the wire is there for it

is there anything i may be missing??

this is the old type switch:


but i think the loom as for a 2 pin switch?? could that be preventing the siren going off? does vn calais loom even have 2 plugs for the door switch ?