2 rail to 3 rail conversion apparatus for use in model trains

A model train system comprising:

• a power supply;
• a track having at least two rails, said power supply being coupled to said track;
• a model train configured to operate on said track, said model train comprising:
• an electrical device having a first power terminal and a second power terminal;
• a first wheel assembly for engaging a first rail;
• a second wheel assembly for engaging a second rail;
• a pickup member for engaging a third rail;
• and
• a switch member coupled between said motor, said first wheel assembly, said second wheel assembly and said pickup member, said switch operable in a first state and a second state,
• wherein in said first state said switch couples said pickup member to said first power terminal, and couples said first wheel assembly and said second wheel assembly to said second power terminal, and in said second state said switch couples said first wheel assembly to said first power terminal and couples said second wheel assembly to said second power terminal.