http://www.bachmanntrains.com/home-usa/dwg/dwgs/H508X-IS001.PDF
Follow the link, bottom of page shows the dummy plug (DP). Remove H4915 (DCC01) and put the DP as shown in diagram. But you do not have too. Locos are shipped out with DC compatibility active as a default, usually. This is an NMRA requirement.
Oh and love that thread !... They (Bachmann and BACH-man) are still debating the issue it seems.
Someone on the Bachmann forum had a similar question. I think you'll find your answer there. Here's a link to that thread:
http://www.bachmanntrains.com/home-usa/board/index.php/topic,3777.0.html
Dr. Frankendiesel aka Scott Running BearSpace Mouse for president!15 year veteran fire fighterCollector of Apple //e'sRunning Bear EnterprisesHistory Channel Club life member.beatus homo qui invenit sapientiam
When a locomotive says "DCC On-Board", such as the new Bachmann American Freedom Train GS4 can it be used on standard DC cab control with no adjustments. The locomotive came with 2 small clips but the instructions are a little "thin" and I don't want to screw up the engine. A small diagram with the engine calls them "dummy clips" but don't say why, when or how to use them.
LIRRMAN (leewal)