Silencer alarm system uninstall

Hi,

Sorry to ask a question none a-body related, but, I have a 99' Plymouth Voyager for school and recently started having electrical problems. I bought the van at the beggining of this year and noticed it had a silencer alarm installed, however, I never knew how it worked or if it did.

The other day the battery was down to 7 volts after sitting for one night. I checked around the cruddy wiring for the alarm system to find any obvious shorts. Also I disconnected the power wire for my driver side power lock because it has been free wheeling anyways. When I completely disconnect the alarm system and try to start the van the starter won't engage, however, everything else seems to work.

Does anyone have any wiring diagrams or suggestions? The model is a Silencer 6905P