Check the electricals with a multimeter or have someone do it for you ?
Maybe the electrical contacts are corroded ?
Check all the moving parts to make sure they aren't seized up with age & corrosion ?
Probably dates back to the 1920's ? That's close to 100 years old.
Probably 12 volt DC but it could be 6 volt DC ?
Hard to know which wire is the hot and which is the ground. It might work one way but not the other ?
Might need a car battery to run it if it draws something like ten of fifteen amps ?
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