Well, I have reached the point in trying to wire the layout that I need to install the Power District CB's and turntable reverser. (BTW I have the Digitrax Chief and pm42's.) I have 2 PM42's. #1 will be straight CB for 4 districts. #2 will have position 1-CB for staging, Position 2 - reverse loop for turntable, and position 3- CB for turntable. I understand the pinout wiring for the "all CB" unit. Here is how I believe the second unit will pin out. 1 A 2 B - Ground from command unit 3 C - Power in from PS12 (connection also for other lead to pin 3) Rail A in - -- 4 D 5 E - To Rail A Staging 6 F - To Rail B Staging Rail B in --- 7 H Section 3 A in- 8 J 9--K - To Turntable Rail A 10-L - To turntable Rail B Section 3 B in- 11 M Rail A in---- 12 N - To pin 8 13 P 14 R Rail B in---- 15 S - to pin 11 + + 22 I would appreciate your comments and corrections if I have done something wrong. It has been a lot of fun running the three trains with the DCC but I still need to get the rest of the layout done. Wiring almost finished then we start the scenery. Thanks for your help.