Are you installing a two way alarm system that gives you visual notification to what set off the alarm? If so you do not want to combine your trigger inputs into one.
You also do not want to combine your parking lights and trunk release wire to sense the alarm.
The Parking light wire from the alarm is an OUTPUT to meant to turn on the OEM circuit. Where the Door and Trunk triggers are INPUTS to the unit.
Also the Parking light OUTPUT from the unit is going to flash the lights when you arm/lock, disarm/unlock or the alarm goes off, so combining all the wires is not going to work.
Hope this helps