it's not a pic, but let me know if this helps, if not ill google some more
WIRING INFORMATION: 2002 Nissan Altima
WIRE WIRE COLOR LOCATION
12V CONSTANT WIRE GREEN Ignition harness
12V IGNITION WIRE BLACK/RED Ignition harness
12V ACCESSORY WIRE RED Ignition harness
SECOND ACCESSORY WIRE WHITE/BLUE Ignition harness
STARTER WIRE BLACK/RED Ignition harness
SECOND STARTER WIRE BLACK/YELLOW Ignition harness
PARKING LIGHTS (+) RED/BLUE Harness In Driver’s Kick Panel
POWER DOOR LOCK (-) PINK At Body Control Module By Fuse Box
POWER DOOR UNLOCK (-) BROWN At Body Control Module By Fuse Box
DRIVER DOOR TRIGGER (-) LT.BLUE At Body Control Module By Fuse Box
PASSENGER DOOR TRIGGER (-) PINK/BLUE At Body Control Module By Fuse Box
REAR DOORS TRIGGER (-) RED/BLACK At Body Control Module By Fuse Box
HOOD TRIGGER (-) YELLOW/BLACK Hood Pin Switch Under Hood
TRUNK TRIGGER (-) PURPLE/WHITE At Body Control Module By Fuse Box
TRUNK RELEASE (-) RED/BLACK or BLUE/RED At Body Control Module By Fuse Box
FACTORY ALARM ARM (-) PINK/BLUE At Door Lock Switch Inside Driver Door
FACTORY ALARM DISARM (-) WHITE/BLUE At Door Lock Switch Inside Driver Door
To test factory alarm arm and disarm wires, meter wires while turning the key in the driver door key cylinder. These wires will also lock and
unlock the doors. A double pulse is required to unlock the doors.
TACHOMETER WHITE/GREEN Engine Control Module behind glove box
BRAKE WIRE (+) RED/GREEN At Brake Pedal Switch
HORN TRIGGER (-) GREEN/WHITE Harness At Steering column
LEFT FRONT WINDOW UP BLUE/RED At Driver Window Motor Inside Door
LEFT FRONT WINDOW DOWN BLUE/WHITE At Driver Window Motor Inside Door
RIGHT FRONT WINDOW UP GREEN Harness In Driver’s Kick From Driver Door
RIGHT FRONT WINDOW DOWN YELLOW Harness In Driver’s Kick From Driver Door
LEFT REAR WINDOW UP PURPLE Harness In Driver’s Kick From Driver Door
LEFT REAR WINDOW DOWN BLUE Harness In Driver’s Kick From Driver Door
RIGHT REAR WINDOW UP RED/YELLOW Harness In Driver’s Kick From Driver Door
RIGHT REAR WINDOW DOWN YELLOW/BLACK Harness In Driver’s Kick From
or heres the link
http://alarmsellout.com/support/diagrams/vehicle/NISSAN ALTIMA 1993-2005.pdf