Wiring Pre War Lionel Type RW Transformer

[wjstix]

Hi, you need to go over to the Classic Toy Train forum, Classic Trains is about real trains.

[Anonymous]

We have a pre-war Lionel O gauge set that has been passed down.  The engine was cleaned and refurbished professionally.  We would like to use it this Christmas but do not know how to wire the transformer.

The transformer is a "Multi Control TrainMaster"  110 Watt Type RW, 155V 60Cycle AC only.  It has a lever contol for the volts, a black whistle button and red direction button.

The back of the transformer has 5 posts.  The top row is  A,U, and B, the second row is C and D.

How to I attach this to the clips on the rail (3 rail system)?

Thank you.