[T3] 6V to 12V Wiper Conversion...

[Dave Hall]

Our '64 1500S had a rotary rheostat for the wiper speed.  I've still got a
NOS somewhere - I think it turned out to be the wrong part as the plunger
for the washers was the wrong length.

Dave
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Brian Fye
Sent: 10 August 2011 04:05
To: type3 at vwtype3.org
Subject: Re: [T3] 6V to 12V Wiper Conversion...

the  pushbutton dash cars had variable speed wipers...

On Tue, Aug 9, 2011 at 8:01 PM, Keith Park <topnotch at nycap.rr.com> wrote:

> My 65 has 2 speed wipers and a 69 wiper motor after the conversion, 
> but I did that 15 years ago and have forgotten the details.  I don't 
> remember a 6V variable speed switch but I may have forgotten it.
>
> Keith
>
>
> Top Notch Restorations
> topnotch at nycap.rr.com
> http://www.a383ina68.addr.com/radiorest/main.htm
> 71 Squareback "Hothe"
> 65 Notchback "El Baja Rojo"
> 65 Squareback "Eggcrate"
> 87 golf "Winterat"
> 93 RX7 "Redstur"
>
>
> -----Original Message-----
> From: type3-vwtype3.org-bounces at lists.vwtype3.org
> [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim 
> Adney
> Sent: Tuesday, August 09, 2011 10:49 PM
> To: type3 at vwtype3.org
> Subject: Re: [T3] 6V to 12V Wiper Conversion...
>
> On 9 Aug 2011 at 12:27, John Jaranson wrote:
>
> > > http://www.carartbyjohn.com/2011Misc/WiperWiring.jpg
>
> > I figured it out!
> >
> > I pulled the 1966 Switch from the dash and did a little bench testing.
> >  I simply hooked the 53, 53a, and 53b circuits together correctly 
> > between the switch and the 1970 motor. (wire colors are different)  
> > I ignored the 30 and 31b circuits/wires.  I applied 12V to 53 just 
> > as in the 1966 wiring diagram and used the ground from the wiper 
> > transmission.  Pulled the switch on and everything worked, including 
> > the variable speed rheostat in the 1966 switch.
> >
> > Now I just need to go install it all back in Sophy.
>
> It's great that you've got it working, John. So Sophy controlled the 
> speed with a variable resistor. That won't give you as much speed 
> variation at 12 V as it did at 6, because there's less current at 12 
> V.
>
> I'm pretty sure you don't want to connect both the high speed and low 
> speed wires at the same time. It may work, but I'm concerned that it 
> might draw a LOT of current and be hard on the motor. I THINK the high 
> and low speed wires on the '70 motor are 53 and 53b. You can try them 
> one at a time to see which is which, but I'm guessing that 53b is the 
> high speed.
>
> If you can live with high speed and the rheostat, then just insulate 
> the other wire and tuck it out of the way. (It will be "hot" when the 
> wipers are running.) Otherwise, you could still add the extra SPDT 
> switch and have both high and low, each with resistor speed reduction.
>
> When you're done, make sure the wipers park themselves (power to 53a) 
> when you turn them off and stop instantly when you turn the key off.
>
> It's also possible that your 66 was expecting a two speed motor and 
> you've got it wired right for that.
>
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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--
Brian Fye
Canyonville Christian Academy
541 839 4401 ext. 107
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