How can I test a whistle relay independent of the whistle motor using a transformer clip on leads
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Bob: Do you have any of the Greenberg Lionel Service Books, they will have a wiring diagram and it will show how the relay is wired up and using that you will be able to test the relay. If you don’t have one let me know and the locomotive the relay is from and I can send you that section of the book.
The information above is from a Jim Weatherford step by step guide on repairing a whistle relay.
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