This is awesome, thanks so much! But I can't see any of the photos in your 2nd post. I get a permission error when I try to view them. I would be interested in your board that converts the AC of DCC to DC, as well as your custom MOSFET board. But I do have a question, is there an advantage to have the rectifier and regulator separate? I believe a lot of guys use a AC to DC combo board when they add LED lights to their passenger cars. And John even sells one he has designed that is adjustable for those lighting projects. Do these not provide the current wee need for smoke and couplers? As for programing the decoder for the couplers, is there a way to do it so you don't have to hit the button again to reset it? I look forward to your posts showing it all coming together. My next two projects are converting MTH PS-1 equipped DL-109 and Railking Cab Forward locomotives.