Sometimes you just have to test the parts and see what happens. The turn signal switch might contain a simple diode to allow operation on AC.
There are odd things done on other brands like putting a rectifier in the horn circuit to allow a DC horn to function on AC. There are LEDs that work on AC but with a reduced brightness. Little electrical mystery parts can be hidden inside devices. Circuits can be hard to figure out without original documentation.
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2011 EC250E
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