It activates when the train passes through

We have cleaned them and provided 9 feet of new 2-conductor cable

AC or DC operation

This is Bachmann 25761 On30 Midwest Mining & Quarry 28-Ton 2-Truck Steam-Powered Loco #5

Trainz Product Id: 11481416

Custom Finishing 7220 HO Fairmont Trailer Kit ProductID_11518742 It activates when the trainThis is a Custom Finishing 7220 HO Fairmont Trailer Kit Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Custom Finishing Model Number: 7220 MSRP: $19. 99 Scale Era: HO Scale Model Type: Vehicles The Trainz SKU for this item is P12384990. Trainz Product Id: 12384990