Silencer alarm system uninstall

Ok let's start with question numbaw wuan. What year/ make / model is the vehicle?

EDIT---73 Duster at the bottom?

2--When you disconnected this thing, did you pay attention to what it was hooked to in the way of the original wiring? If the car won't crank, it's likely that the alarm interrupted the yellow "start" wire going from the ignition switch, down the column connector, through the bulkhead, and to the start relay. If you have the dreaded seat belt interlock, this might be a factor

3--If the alarm broke the start wire, it seems likely that it also might have cut the ignition run line, and you'll have to chase this down as well.

To put this simply, it sounds as if the alarm is acting as a "hidden switch" in series with your start wire, and possibly the "ignition run" circuit."

What do you have in the way of a shop manual and or wiring diagrams?