Here is what Audiovox lists:
#513616: 2008 TOYOTA SIENNA MINIVAN WITH 3.5L ENGINE AND 6-SPEAKER AUDIO SYSTEM
Audio/Mobile Video
WIRE COLOR POLARITY LOCATION
Battery BLUE / YELLOW (+) RADIO HARNESS
Accesory GRAY (+) RADIO HARNESS
Ground WHITE/ BLACK (-) RADIO HARNESS
Illumination GREEN (+) RADIO HARNESS
Power Antenna PINK/BLUE (+) RADIO HARNESS
LF Speaker (+) PINK
LF Speaker (-) VIOLET
RF Speaker (+) GREEN
RF Speaker (-) BLUE
LR Speaker (+) BLACK
LR Speaker (-) YELLOW
RR Speaker (+) RED
RR Speaker (-) WHITE
Radio Security YES
Security
WIRE COLOR POLARITY LOCATION
Battery WHITE/ RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK (+) IGNITION SWITCH HARNESS
Starter 1 BLACK / YELLOW (+) IGNITION SWITCH HARNESS
All Door Trigger BLUE (-) IGNITION SWITCH HARNESS
Domelight Super BLUE (-) IGNITION SWITCH HARNESS
LF Latch RED / YELLOW (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #14
RF Latch RED / YELLOW (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #23
LR Latch GRAY (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #15
RR Latch RED / WHITE (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #16
Trunk Trigger GREEN / WHITE (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #25
Hood Trigger RED / WHITE (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #10
Alarm Disarm BLUE/BLACK (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #21
Parking Lights GREEN/ BLACK (-) IGNITION SWITCH HARNESS
Convenience
WIRE COLOR POLARITY LOCATION
Headlights-Lo RED / GREEN (-) AT VEHICLE LIGHT SWITCH HARNESS
LF Pk Lt Bulb GREEN (+) AT FRONT LEFT PARKING LIGHT
RF Pk Lt Bulb GREEN (+) AT FRONT RIGHT PARKING LIGHT
LR Pk Lt Bulb GREEN (+) AT REAR LEFT PARKING LIGHT
RR Pk Lt Bulb GREEN (+) AT REAR RIGHT PARKING LIGHT
All Hazrd Lights BLACK/ ORANGE (-) AT VEHICLE HAZARD SWITCH HARNESS
Wipers-Lo BLUE/BLACK (+) AT VEHICLE WIPER SWITCH HARNESS
Wipers-Hi BLUE/ORANGE (+) AT VEHICLE WIPER SWITCH HARNESS
Remote Start
WIRE COLOR POLARITY LOCATION
Battery WHITE/ RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK (+) IGNITION SWITCH HARNESS
Ignition 2 BLACK / YELLOW (+) IGNITION SWITCH HARNESS
Accessory 1 PINK (+) IGNITION SWITCH HARNESS
Starter 1 BLACK / YELLOW (+) IGNITION SWITCH HARNESS
Anti-Theft Type UNIVERSAL IMMOBILIZER
Anti-Theft Descript THE KEY SENDS AN RF SIGNAL TO THE BCM MODULE THROUGH AN ANTENNA LOCATED AROUND THE IGNITION CYLINDER
Key Sense BLUE/BLACK (-) IGNITION SWITCH HARNESS
Tachometer GREEN/ RED (AC) AT ECM MODULE TO RIGHT OF GLOVEBOX
PIN #5
Speed Sense VIOLET/WHITE (AC) AT ECM MODULE TO RIGHT OF GLOVEBOX
PIN #17
Parking Lights GREEN/ BLACK (-) IGNITION SWITCH HARNESS
Brake Lights GREEN / WHITE (+) AT SWITCH ABOVE BRAKE PEDAL
Reverse Lights RED / BLACK (+) IN HARNESS AT LIGHT
Horn GREEN/ BLACK (+) IGNITION SWITCH HARNESS
Modules
WIRE LOCATION
Module 1 ECM - BEHIND RIGHT SIDE OF DASH TO RIGHT OF GLOVEBOX
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock GREEN (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #12
PowerLock RED / YELLOW (-) AT BCM MODULE BEHIND DRIVERS SIDE OF DASH NEAR STEERING COLUMN
PIN #9
Driver Mtr Unlock BLUE/RED (+) IN HARNESS IN DRIVERS KICKPANEL
Driver Mtr Lock YELLOW/BLACK (+) IN HARNESS IN DRIVERS KICKPANEL
LF Window Up RED (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
LF Window Dn GREEN (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
RF Window Up RED / BLUE (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
RF Window Dn BLACK/ WHITE (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
LR Window Up PINK (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
LR Window Dn BLUE/RED (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
RR Window Up RED / BLACK (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
RR Window Dn BLACK (REV) AT VEHICLE MASTER WINDOW SWITCH IN DRIVERS DOOR
Sunroof Open RED / WHITE (-) AT SUNROOF SWITCH IN OVERHEAD CONSOLE
Sunroof Close RED / BLUE (-) AT SUNROOF SWITCH IN OVERHEAD CONSOLE
Note: Audiovox makes no representation or warranty with respect to the above information including its accuracy, completeness, or its freedom from third parties' proprietary rights. Audiovox disclaims all liability or responsibility for errors or omissions therein or any decision made by the recipient in reliance thereon. The installer must verify any circuitry with the proper test equipment prior to installation.
Installer, IT support, and FFL. I need less hobbies.