<VV> Wiper problem

[Larry Forman]

Hi Jim,
You can test/verify this by using a multimeter with one test lead well grounded and measure the voltage at body of the switch when operating the switch.  If it is grounded (zero volts) and you have proper operation, that is what you want.  If the switch is not grounded (other than zero volts) and things don't work right, that is very likely your problem.  Since the switch works in some conditions, that verifies you have voltage to the circuit.  My bet is that when you press the button, you are providing enough physical force to make the ground make electrical contact.  

You can also test the ground when there is NO power to that circuit, by using the ohmmeter mode.  Measure the ohms from the switch body to the dash ground and it should be near zero ohms, or less than about 10 ohms.  NEVER use an ohmmeter on a powered circuit or you risk damaging the meter or blowing out it's internal fuse, assuming it has one.

Or just tighten the switch with the star washer intact as Everett suggests and forget all this troubleshooting nonsense!

HTH,
-- Larry
> ----- Original Message -----
> From: "EVERETT WILSON" <aircooled6 at prodigy.net>
> To: "Jim Houston" <tampatexan at tampabay.rr.com>, "Virtual Vairs (E-mail)" <virtualvairs at corvair.org>
> Subject: Re: <VV> Wiper problem
> Date: Wed, 25 Jan 2006 11:44:59 -0800 (PST)
> 
> 
> The switch has lost its ground to the dashboard.  Make
> sure that the star washer is under the nut so that
> there is good contact with the dash.
> 
> Everett Wilson
> North Richland Hills TX
> 67 500 4dr - where I learned about wiper switch
> 64 Greenbrier
> 
> 
> --- Jim Houston <tampatexan at tampabay.rr.com> wrote:
> 
> > I'm having a problem with my wipers.  I replaced the
> > dash harness because I'm adding air conditioning.  Now when I
> > turn on the wipers, nothing happens -- if I push the wash button, the
> > wipers operate and the pump clicks...  if I turn the switch to the 2nd
> > position, again nothing happens until I push the button and then they
> > operate at high speed...  I have checked the wiring using the diagram in the
> > latest Comunique and it is correct.  Any suggestions would be
> > appreciated...
> >
> > Jim Houston
> > Brandon, FL
> > '65 Monza (soon to have AC)
> > '66 Monza (Group Red)
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