thanks for the reply! I really don't think that programming a decoder should be that much of an effort – it eats away all the fun. The good thing about the Digikeijs chip is the price. This is just a suggestion and I don't speak of first hand experience but maybe you would like to check out the Sound Car decoder of Soundtraxx
Function mapping on page 14
It's more expensive but for a caboose of that quality worth the investment. It would also add sound and lights and your last car creates a bit of a rumble when gliding along. I plan to use these in each train, also in the mid of the train because I love the brake noise coming not only from the locomotive. F11 applies brakes and they get louder the slower the train. You can activate the car by wiping a magnet on a stick over the roof (where you mounted the decoder) and it will start to release the hand brakes. So cool!
You see, I'm totally in love with that concept. My own first sound car, a stock car, is in paint shop now.
Thanks Sarah....I will look into it ..... I tried the Digikeji decoder because of the size. The space inside the caboose is limited at this point. I can easily tuck a decoder into one of the closets and I developed a very simple LED light bar out of Evergreen channel. Any way....I will look at the Soundtraxx unit.