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On V-twin coils, with the diodes in the kill wires, how does that diode being bad cause issues with the coils? If that wire is just a ground, how could the coils interfere with one another?
i understand HOW the diode works, What i don't know is the WHY, if that wire is a ground circuit when the key is shut off, they both go to ground? What causes the back feed from one coil to the other?Diode only allows current to flow in one direction. With both coils hooked to the same kill wire, the diode will not allow one one coil to back feed the other coil. Think of it as a one way street, everything needs to flow in the same direction.