Add sound to 18313 GG-1

http://www.3rdrail.com/err-3rdrail/

FYI, serial data line comes off the LCRU  from the program/run switch.

https://www.lionelsupport.com/...8313-001Complete.pdf

But note this topic- showing that violet wire that is shared with program/run. Thus in your engine, the Grey wire is in theory serial data

https://ogrforum.com/...c/152336474728041000

@DanssuperO posted:

I wired a TMCC LCRU and it works  as a conventional e unit fine ..

I like to wire it permanently to work  with command ..

Could you please tell me which wires need to be connected to get a signal THANK-you ..daniel

All that said, I know cost is likely a consideration, but in truth- upgrading to an ERR AC commander (similar form factor to the LCRU)

would be more plug and play with the railsounds and give better performance in theory motor drive wise too. I'll admit, that expense of near $300+ in total could be a hard pill to swallow.

Check the space under the hood. Railsounds board may not fit.