Greetings folks,

I discovered awhile back that the locking differential
wouldn't engage, and the dash switch didn't hiss like it
normally does.  I pulled the switch, and checked for vacuum
on all three lines (white, black, blue).

    Where is the source of the vacuum for the locking
    differential switch?
    Which of the three lines should have vacuum at the switch?
    Any suggestion where I should start looking for a broken
    or disconnected line?

It's cold and wet out here in Colorado, so I'd like to
minimize the search.
--

*Thanks and Happy Holidays,
Jon B Kanas
Email: kanas@qadas.com <mailto:kanas@qadas.com>
Longmont, Colorado; Cultural Center of the Universe
Website: http://www.qadas.com/~kanas
<http://www.qadas.com/%7Ekanas> *