Replace one truck/coupler on your freight car (Bachmann) with th eEnd of Train Device to finish the end of your freight train.  Track powered, no wiring required.  Operates on both DC and DCC layouts.  This End of Train Device installs on the following HO Bachmann rolling stock with EZ mate couplers and may also be compatible with some other popular brands of 50 ft plug-door box cars, 56 fut ACF Center Flow Hoppers, 50 ft steel reefers, 52ft 6in Flat cars with 35ft piggyback trailers, Evans All-Door Box Cars, 27 ft ore cars, Canadian 4-Bay Cylindrical  hoppers, nad 50ft 6 inc ACF outside braced Sliding Door Box Cars.