Thanks, guys.

Good news/bad news: Got the switch (view was blocked by plunger; shows why you shouldn't try working in the dark, upside down), but a quick test with an ohmmeter says it's working okay. Fuses okay, too. Now what? Does the signal feed through some other control module that could be bad?

M.B.Doc - I agree. I'm looking for legal copies of the factory manuals, not bootlegs; I just wondered whether there's any other source.