Alarm/Remote Start/Keyless Entry wiring diagram for '02
 

Hey all,
I'm ordering a new Alarm/Remote Start/Keyless Entry system for my '02 and have a few questions for ya.
1. Does anyone have a wiring diagram for the install?
2. What is the easiest location to mount and wire the unit?
3. Where would be the choice spot for the siren under the hood?
4. The stock alarm/keyless hasn’t worked in years, do I need to remove it or do something so the new system doesn’t screw something up?

Thanks all for the help, I greatly appreciate it!