How do you replace these?  Is it like a drop in part?  Can you send me a link to one that will replace these?  Thanks in advance and thanks for the reply man.

I take it you're in Washington? 

Anyways on to the pictures.  I appologize for crappy pics, Just got outta work and got this message. 

This is the one on the Empire builder set.



This is the one on all the Car's I bought... But they won't work with the train.

Nothing on how to replace/ fix the problem with linking the trains together?

First off a little history...since I was younger I had a love for model trains, but coming from a family who didn't have the extra money for me to be privied to owning them I never had the opportunity to fulfill my ambitions.  Now that I am out and on my own and living a rather successful life I have decided to pick up the hobby.  I did a good amount of research(apparently not enough) and ordered myself the Empire Builder from Bachmann as well as 8 extra railcars and about 20 feet or track.  Before I get into my plans... I'm having problems, the connectors on the Bachmann cars are different then the 8 I bought.  Which is more standard, and how do you go about replacing them.  Does anybody have pictures, etc that could help a guy out.  Thank you in advance.