Getting professional installation of DCC is one of the best ways you can spend your money, in my thinking. Unless you really, really like playing with electronics and extreme micro soldering. Some folks do, more power to them. But we have gotten people on here before whose first question is how to make the train go and the next question is how do I install DCC. I've spent a fair amount of money having a pro install DCC/sound in well over 25 engines, but then, he is a friend and gives me good rates. Because of that, I've never burned out a decoder or put my soldering iron through a plastic engine shell.