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Date:         Fri, 10 Sep 2010 12:51:05 -0700
Reply-To:     Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject:      Re: Unfixable 86 Washers, again - figured out
Comments: To: David Beierl <dbeierl@attglobal.net>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=response

yup, makes total sense. first time I've seen any problem with a washer/wiper switch on a vanagon,

----- Original Message ----- From: "David Beierl" <dbeierl@attglobal.net> To: "Scott Daniel - Turbovans" <scottdaniel@TURBOVANS.COM> Cc: <vanagon@GERRY.VANAGON.COM> Sent: Thursday, September 09, 2010 5:44 PM Subject: Re: Unfixable 86 Washers, again - figured out

> 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


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