Bachmann does not sell the connectors as repair parts -- you have to send the locomotive back to them for repair.
I have bought the connector with the leads. The parts mounted in the tenders, no idea. Below is the Bachmann site with a page for ordering parts.
http://www.bachmanntrains.com/home-usa/board/index.php
To my knowledge, the connector part in the loco or tender frame is not available.
When I remove the connector, I gently pry with a small jewelers screwdriver. I also gently put the connector back in.
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.