Fredstrains posted:...
GUNRUNNER: Can these CARs be Modified w/ an ERR Circuit so it can be operated anywhere on your Layout?
Or, if you don't have Lionel command-control you can make a DIY modification to operate these remotely. It requires assembling and working with small electronic components and modules so not suitable for most guys. But can be done for about $5-10 per car. Retro-fitting a UCS or 5-rail activation track into an existing layout could be a hassle. Also, my understanding is some track systems don't like the 4th/5th rail power pickup slider shoes which could be removed if using a remote-control method.
The build instructions are written up here on the JCS archive site. The site seems to be having problems at the moment so here's a photo summarizing components involved and a video: