On infiniti models after 2007 it already comes with push button start option.
But before 2006 models there was no push button start option.but you can externally install it by by-passing the ignition switch.
To get exact procedure, please click the link below:----
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in this link there is proper procedure step by step given.
To order parts for you infiniti,click the link below:---
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Ignition wire for your infiniti model.
12V CONSTANT WIRE BLUE/RED or RED Ignition Harness
STARTER WIRE BLUE Ignition Harness
SECOND STARTER WIRE PINK Ignition Harness
IGNITION WIRE BLACK Ignition Harness
ACCESSORY WIRE WHITE Ignition Harness
POWER DOOR LOCK (-) PINK At Module In Driver’s Door
POWER DOOR UNLOCK (-) ORANGE At Module In Driver’s Door
Test door lock wires while turning the key in the driver’s door
PARKING LIGHTS (+) WHITE In White Connector In Driver’s Kick Panel
DRIVER DOOR TRIGGER WIRE (-) WHITE At Body Control Module In Driver’s KickPanel
PASSENGER FRONT DOOR TRIGGER WIRE (-) BLACK At Body Control Module In Driver’s KickPanel
DRIVER REAR DOOR TRIGGER WIRE(-) PINK At Body Control Module In Driver’s Kick
Panel
PASSENGER REAR DOOR TRIGGER WIRE (-) PINK/BLUE At Body Control Module IN Driver’s Kick Panel
DOMELIGHT SUPERVISION (-) PURPLE/WHITE In Black Connector At Body Control Module
TRUNK TRIGGER (-) BLUE At Body Control Module In Driver’s KickPanel
HOOD TRIGGER (-) LIGHT GREEN At Factory Hood Pin
TRUNK RELEASE (+) ORANGE OR LT. GREEN At Trunk Release Switch
BRAKE WIRE (+) PINK At Brake Pedal Switch
HORN TRIGGER (-) GREEN/BLACK or LIGHT/BLUE At Steering Column
LEFT FRONT WINDOW UP
LEFT FRONT WINDOW DOWN
RIGHT FRONT WINDOW UP
RIGHT FRONT WINDOW DOWN
LEFT REAR WINDOW UP
LEFT REAR WINDOW DOWN
RIGHT REAR WINDOW UP
RIGHT REAR WINDOW DOWN
Extended triggers on the door lock wires will operate the power windows.
