This link if for Wire harness connectors 5 pins for 1NO1NC of PB161,PM192 and PB223 series
Wire harness connectors for PB161,PM192 and PB223 series: 3 wires for 1NO1NC non-illuminated type, 5 wires for 1NO1NC illuminated type, 8 wires for 2NO2NC illuminated type,