I bought a Bachmann Spectrum set "used" from a local train shop. Very nice set.  The only thing missing is the cord from the power pack to the track.  It appears to need a plug on one end (not terminals like I am used to).  Can I buy this power cord?  I checked into a replacement rerailer/power connection track and that one has terminals on the wires and not the plug.  Can I just get that plug from Radio Shack?  Any help would be appreciated.  Thanks.