PEWE Remote Switch Box for Cambridge L-Nav and Gps-Nav

My "new" 1999 LS8 glider came equipped with a remote stick having 7 push buttons, that control a Cambridge L-Nav and Gps-Nav. The stick buttons go through a PEWE Remote Switch Box, using the typical Cambridge telephone connectors, then outputs go to the L-Nav and Gps-Nav.

Unfortunately no manual came with the glider for the PEWE. Although it works just fine, I wonder if anyone can direct me to a source for the manual? I've had no luck searching via Google. The only thing I know is that it was made in Germany.

Thanks!

-John, Q3

Perhaps Klaus Keim?
http://tekk-home.de/typo3/index.php?id=0
Jim

Thanks for the tip, Jim. I sent Herr Keim an email.

His History page mentions remote control for the LNAV, so I've got my fingers crossed that he might know something about the PEWE...

-John, Q3