grober
MB Master
I posted this link on another forum in reponse to a member's question. This is a link to a series of user's manuals and installation instructions for Scorpion alarms fitted to older Mercedes models. Most of these alarms were fitted by the supplying MB dealer so the installations varied according to the preference of the Tech who was fitting it at the time. That said the electrical principles/circuitry would be essentially the same. As these sites don't always stay around for ever, if you have one of these alarms I suggest you open and copy the relevant manual/instructions to your hard disc while you can.
https://web.archive.org/web/20050307091218/http://www.scorpionalarms.com/downloads.asp
https://web.archive.org/web/20050307091218/http://www.scorpionalarms.com/downloads.asp