AMEN to that, richtazz!
Aftermarket alarms, remote start and lock systems are made to SELL, not to be installed on vehicles. Sometimes, the hardware is just fine, but the "professional" installations leave a lot to be desired - Butt spliced crimp connections, no solder anywere, no fusing or protection, incorrect wire colors, poor insulation and wire protection techniques, lazy wire routing, etcetera.
Some of them are junk no matter how careful and meticulous the installer might be.