This is a decoder install in the second generation N scale Atlas RS-1 that was China made. I installed a $12.00 Lais 2 function decoder in the loco. A somewhat easier install can be undertaken by using a TCS CN decoder that inserts where the light boards normally are. It costs over twice as much but there is less milling to be done and less wiring needed. If you go that route look at this link ( HERE ) as I think it pretty much eliminates much of the milling as the light boards are reversed in position. This will require you to change the normal direction of travel when you program the loco depending if you want the cab end to run first or not. There is going to be a fair amount of cutting/milling of the frame using this decoder but I wouldn't let that put you off as it can be done with tools you might all ready have at hand and it took me less than 45 minutes to do that part of the install. I bought the loco for $45.00 on Ebay and the decoder was $12.00. So for less than $60.00 plus freight I have a nice running DCC loco. I'll pretty much let the photos do the talking from this point on and there are more than I can post here so for the whole story go to my web site here ... http://1fatgmc.com/RailRoad/Decoder-1/page-5.html I have a video up using the rotary cutter ( HERE ). I'm happy with this install and the way the loco runs. Again for a lot more photos and additional information go here ... http://1fatgmc.com/RailRoad/Decoder-1/page-5.html Sumner
