From what I was able to glean from a quick Google search, I believe the
green and yellow leads have to do with the engine immobilizer.
http://www.freymoto.com/media/Sample...ll%20Guide.pdf

Thanks for the reply, Frank.

That one is a bit more sophisticated than what I have. Mine is a siren only,
no "brain". Or the brain (such as it is) is included in the siren. Just 3
wires coming out of the siren (other than power -- red and black). These 3
other wires are blue, green, black (yes, 2 black wires).

Anyone seen these? I'll post a photo later.

Thanks,
--
DaveC

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