At 04:49 PM 9/9/2010  -0700, Scott Daniel - Turbovans wrote:
>Weirdness ..
>you'd think if the washer/wiper stalk can sent out the signal to 'do things'
>when you pull it toward you, like if it'll make the wipers sweep, you'd
>think , or I would ..that that's one signal and must be ok, since it does
>two things ..makes wipers sweep, and washers squirt.
>Perhaps there are two contacts in the switch for that and one of them won't
>carry any real load. .

You didn't understand me.  The signal from the wash switch to the
wiper relay is just that, a signal.  There's no current to speak of,
it's just telling the wiper relay to do its programmed routine.  The
relay gets the power to drive the wipers directly from S11.  The
washer motor OTOH gets its power from S11 *through the wash switch,*
and it probably draws a couple amps.  If the wash switch has a poor
contact, it will pass the tiny current to instruct the wiper relay,
but if you load it down with the pump, the voltage drops so the pump
won't run and there's not enough voltage to instruct the wiper relay.

Yours,
David