cq window no rising...

[Doug Johnson]

> -----Original Message-----
> From: Huw Powell [mailto:audi at humanspeakers.com]
> Sent: Monday, March 22, 2004 9:35 AM
> To: Doug Johnson
> Cc: Kneale Brownson; q-list
> Subject: Re: cq window no rising...
>
>
> > Hey, wait!!!
> >
> > If either of the intra-switch wahrs is broken, the window won't
> move either
> > direction, will it?
> >
> > With a broken wahr, continuity is disrupted to move the window in either
> > direction....
> >
> > Please help me understand.
>
> There are two interesting wires from sw 1 to sw 2.  sw 2 passes them
> directly to the motor when it is in the "rest" position, allowing sw 1
> to control the motor.  There is also a boring wire, which is always 12
> volts at both switches.
>
> When sw 1 is at rest, *both* of those two interesting wires are
> grounded.  sw 2 uses either one or the other for a ground, depending on
> which way you try to run the motor.
>
> So my theory is that on your car, *one* of those two wires is broken,
> and the 12 v one is good.  So you can only run the window in one
> direction.
>
> I'm not sure if this entirely makes sense, but basically, you do need to
> pull both rubber boots and take a look at the condition of the wires.
>
> You would also be well advised to pull both interior door skins and
> examine everything, disconnect the battery ground strap and measure the
> wires' resistances, etc.
>

Or...I could just spray contact cleaner on both switches, wait a while for
them to dry, and use the windows as Gawd had intended me to....  They now
work!

I'm sorry I dragged this out so long, and asked so many questions, but that
window wahring's interesting!  Who'd a thunk up such a circuit, 'cept those
clever Germans????

Thanks to all who tried to help me understand!!!!