Silencer alarm system uninstall
I am no aftermarket alarm guru but, here's a suggestion you can try. I've ran into this kind of problem on my daughter's 97 Intrepid which has an aftermarket alarm. Her particular security system interrupted the starter circuit when armed. I found that the OEM ign. switch wire was tapped into the main harness that went into the alarm. I unplugged that harness from the unit, made a wire with 2 spade connectors and plugged them into the harness, bypassing the alarm and completing the ign. circuit. Light still flashes as though the alarm is armed, but unit is bypassed.