OK, I'm stumped...

JD 112H lawn tractor (nearly ancient)

Symptom is no voltage in ignition system when turn key to "on/start".

Have had issue on occasion w/ safety interlock on tranny, but that ain't
the problem this time; have tested continuity from switch connection
thru both safety contacts (transmission and blade) to connection at
solenoid and is good. Plus, when one of them fails to make contact,
won't crank but does get voltage to generator charge light; not getting
that far now.

Question -- is way to test if solenoid isn't operating might be issue?
Service manuals aren't online but here's a link to the parts diagram for
the wiring harness that is a fairly complete wiring layout.

http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePa geServlet_Alt

I scanned the wiring diagram I have; don't know how good it'll be but
there's a copy posted here...

http://photobucket.com/userinfo/reset/dpb_bucket/9d06ddac9fcf93eb81b6e66ef293a072ecd6c948

Any troubleshooting help/suggestions appreciated...

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