I have an Aristocraft ART-22104. It is a U25B diesel. It is in a black box.

I think it must be the first version or close to it. It is the only Aristocraft loco that I own.

How do I open this loco up? I would like to put in a radio system of some sort.

Are there any wiring diagrams available for this engine?

Tom

Tom, This may help. I believe you want to remove the 4 #51 screws and also #48

http://www.gbdb.info/data/zeichnung/Aristo-Craft/22104.pdf

There is a “hidden screw”, noted here: https://elmassian.com/index.php?option=com_content&view=article&id=318&Itemid=351

Greg