There is a nice site made by TEMIC including a whole
bunch of automotive electronic applications.

Visit TEMIC itself at

http://www.temic.de

or directly to the automotive site

http://www.temic.de/prodassp.html

and you will find applications like the wiper circuit.
But you have to have the capability to read .PDF files.

Helmut
'80 Camper
 ----------
>From: schmitrw
To: Multiple recipients of list
Subject: Turn Signal Flasher Replaced-Wipers NG
Date: Tuesday, 28 Jan, 1997 16:38

>Has anyone
>dealt with this by making their own programmable delay circuit for the
>wipers to allow the delay interval to be varied?  Willing to share the
>schematic?