It has been a few weeks, and I now have the err upgrade install in and it works great. I really appreciate the help from all of you. I did several modifications as well to help its performance around the curves I hope to post on here in the coming weeks once completed.
The last part of the install is working to control the volume. While I can raise and lower the volume of the chuff from my cab1, I cannot do the same for the whistle. I would like to be able to adjust this volume with out taking apart the tender. The sound board is a rail sounds commander from 3rd rail. When I read the directions from 3rd rail on their rail sounds commander, it only mentions a pot on the board and no reference to being able to use the pot on the tender already. Is there a way around this? Thinking if I removed the pot from the board and soldered the wires from the pot already mounted to the tender.