At 02:54 PM 1/16/2010, Jim Felder wrote:
>On an all-day trip home last week, I noticed an electrical smell right
>before my heater blower quit working. The switch is was relatively
>new, but I replaced it anyway as the quality of those sorts of parts
>seems iffy these days. replacing the switch elicits no response at all
>from the blower (it was squealing mildly upon starting before it--or
>something--quit). I am wondering if there is a hidden fuse to the
>motor I should be looking for; the fuses in the fuse box and the two
>up above and to the right of it seem OK.

Jim, unplug the connector from the back of the switch and look for
12v (key on) on any of the leads.  I'm betting you won't find it.

If not, your problem is between there and the fuse/relay panel, or
possibly the X-contact relay (in which case headlights and such also
won't work) -- or else the motor is frozen, in which case you'll get
a good spark and heavy draw when jumpering the high speed.

If you do, jumper that lead to each of the three others.  I'm
guessing that the motor will run.
If the motor does run, then you've had the bad luck to have two bad
switches in a row, or a bad supply connection on the plug.

Yours,
David