I'd like to install a decoder in an older Athearn Pa-1, but I don't have a programmer.  If I install the "Bachmann�44913 EZ Command Decoder/Harness", can I program it with just my  Bachmann EZ command controller?   Here is a link to a place that sells them.

http://www.modeltrainstuff.com/Bachmann_DCC_Decoders_s/2209.htm

Thanks