Wiring diagrams are our friend John, start with them. Trace the
components on the circuit using the wiring diagram. note that the both
are on the x relay controlled line. See if the wipers etc work (next
time you have this fault) if you are pulling up on high beam stalk.

Didn't you have this problem a few weeks ago? or was it someone else.
is this the same van that cut out on you?

why are you hesitating about ign switch btw?

good luck

alistair

On 28-Feb-11, at 2:31 PM, John Rodgers wrote:

> When I was in the Navy, and then later in Aircraft Maintenance -
> electrical problems were always jokingly attributed to the mysterious
> "intermittent short to ground!" Well, it's here again!!
>
> Started to rain, hit the wipers - nothing. Checked the heater fans -
> front and rear. Nothing. Jiggles ignition switch, still nothing.
> Cycled
> the wiper switch several times, nothing. Got home, started up the
> uphill
> drive way, wipers started. Checked the heater fans - both work. So
> it's
> not fuses.
>
> I haven't started looking yet, nor looked up the circuits in the
> Bentley
> - but any ideas where to start? I have a new ignition switch to
> install.
> Is this the time? BTW, I'm about to swap out for the programmable
> wiper
> relay.
>
> Thanks,
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com