Does a female connector that connects two A/C E-8 locomotives come with the locomotive or is it a separate item that has to be purchased? They will run without it, but it would be nice to have all the parts.
You will probably have to make your own, as I don’t know of any source. They are easy to make.
Steve
I think he is referring to the battery connector that is on all recent Aristo diesels.
That connector is only active when the battery/track switch is set to battery.
If you want to run two locos off of the same battery,you would
need to make the connector that Steve is talking about, otherwise the connector is not used.
Bill
Bill, that’s the one that I was referring to, also. Great minds think alike. 
Talk to Navin at Crest-electronics.com (phone number on site)
This was available as an extra part… most likely he has them.
You can also make one up by buying the connectors from allelectronics.com or even on amazon.
Greg