Do remember here that LGB will take more power to run your engines and all DCC systems will require additional voltage power as there base units will not give enough power to run these engines. Do look into RailPro battery power, it takes all the fun out of model railroading, no track power, no wiring, no track to clean. Watch the YouTube videos and see what this system can do, they are becoming very popular, they may cost a little more upfront, but the cost per added engine is around $250, module, speaker, battery, charging harness. I purchase from RCS of New England, talk with Don Sweet, he is so helpful and will walk you through what ever you need to know.Greg, as far as current I assume that the DCC puts full power to the track all the time 18 volts maybe. Number of pins I'm thinking 8 or 10, motor, track, front light, smoke, cab light. How about a speaker recommendation, I have a 2 and 1/2 in speaker mount in the tender I'll be using a Phoenix SM18St. I'm looking at two connectors from all electronics with 22 awg wire 6 pin and 4 pin. I'll use the 4-pin for the track and the motor.