Operating close coupler with single-pole electrical connection for lighted passenger cars. This coupler can be used for cars with the lengths 26.4 cm / 10-3/8″, 27 cm / 10-5/8″, and 28.2 cm / 11-1/8″ that are ready for lighting kits. These couplers can be used when you are installing the 73400 lighting kit. One car in the consist requires a 73404, 73406, or 73406 pickup shoe. Contents: 2 close couplers for standard coupler pockets with contacts, 2 sets of contacts for the coupler shafts, 1 ground spring for the truck, 2 wires for connections, and instructions are included. You have reliable connections with snap-in contacts. You can couple and uncouple a car with this coupler manually on a layout; these couplers will also couple with regular close couplers without electrical contacts.