Please see the contacts label of the adapted monobloc switch sub-assembly ZCMD41T1. This label shows the numbering of the white wires you can use for the switch cabling. Terminals 1 to 2 and 5 to 6 are normally open, and terminals 1 to 2 and 5 to 6 are normally closed switch contacts. This device uses a special halogen-free cable for railway equipment, and has a 1m cable which complies to EN 50306 and EN 45545 standards.