You can find a picture of both transformers at www.tandem-associates.com. They both have RED lamp caps, part # r-68. You can also visit "Olsens Toy Train Parts" website, and scroll to bottom of page and click on "LIBRARY" to search through the transformer section. It shows diagrams of the internal components of both, which look identical. It also has a parts list of both transformers. Hope this helps.
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