If anyone is in the market for a diesel soundboard MRC is selling them for $ 22.95 but you need to order two or more to make it worth your while. http://www.modelrec.com/search/product-view.asp?ID=8287. If you have locomotives that are on the quiet side then these are perfect I have 6 of them and they are great. There is a remote for additional sounds like, Brake release, uncoupling and about 10 other sounds. The remote is about 11.00 but MCR doesn’t sell them. I just thought I would share since a lot of people ask about sound units. They are an easy two wire hookup.
Kevin