you need to get wiring printout for your car at your local car stereo shop and multimeter. the printout will gave you the wire color and location for the circuits you need to connect to search for circuits in the car put one probe of the meter to ground then one probe to the wire you suspect then activate the circuit if its correct then the meter will jump either from zero to twelve volts or twelve volts to zero
circuits you need
parking lights
door trigger
constant
ignition
starter (if you want a starter kill)
door locks
and a ground
you will also need to run a siren wire to the engine compartment
if the meter reads twelve volts and switches to zero when you activate the circuit this means the circuit is negative trigger
if it is vise vers this means the circuit is posotive trigger
good luck