ok well at least you know something. still, electrical is a far cry from mechanical and the two fields usually dont get along. cars, especially new cars, are easy to mess up and expensive to fix.
2004 Toyota Tundra:
Security
WIRE COLOR POLARITY LOCATION
Battery WHITE/ BLUE OR WHITE/ RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK/ RED (+) IGNITION SWITCH HARNESS
Starter 1 BLACK/ WHITE (+) IGNITION SWITCH HARNESS
All Door Trigger BLUE/BLACK (-) KEY CYL. LIGHT
LF Latch LT.GREEN/ BLACK (-) DRIVER'S KICK PANEL
RF Latch GREY/RED (-) BLACK 14 PIN CONNECTOR IN PASSENGER'S KICK
LR Latch RED / WHITE (-) UNDER DRIVER'S SILL PLATE
RR Latch RED / WHITE (-) BLACK 14 PIN CONNECTOR IN PASSENGER'S KICK
Trunk Trigger RED / BLUE (-) PIN SWITCH OR LIGHT IN TRUNK
Hood Trigger RED / WHITE OR RED / BLUE (-) PIN SWITCH OR THEFT MOD/ECU
Alarm Disarm DISARMS WITH UNLOCK*
FACTORY THEFT ECU UNDER DRIVER SIDE DASH.
Alarm Arm ARMS WITH LOCK
Parking Lights GREEN (+) DRIVER KICK OR FUSE BOX
Low Crr Pk Lights GREEN (-) STEERING COLUMN HARNESS
Convenience
WIRE COLOR POLARITY LOCATION
Headlights-Lo RED / BLUE (-) AT VEHICLE LIGHT SWITCH
Wipers-Lo BLUE/BLACK (-) AT VEHICLE WIPER MOTOR
Remote Start
WIRE COLOR POLARITY LOCATION
Battery WHITE/ BLUE OR WHITE/ RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK/ RED (+) IGNITION SWITCH HARNESS
Ignition 2 BLACK / YELLOW (+) IGNITION SWITCH HARNESS
Accessory 1 PINK (+) IGNITION SWITCH HARNESS
Starter 1 BLACK/ WHITE (+) IGNITION SWITCH HARNESS
Key Sense YELLOW* (-) IGNITION HARNESS
* USING THE ACTIVE OUTPUT WIRE FROM REMOTE START UNIT TO THIS WIRE WILL DIARM FACTORY ALARM WITHOUT UNLOCKING DOORS.
Tachometer GREEN/ BLACK (AC) AT IGNITION COIL
CAN ALSO BE FOUND AS A WHITE/ BLUE 31 PIN CONNECTOR AT THE ECM PIN 5
Speed Sense GREEN/ ORANGE OR PURPLE / WHITE (AC) 35 PIN CONNECTOR AT THE ECM PIN 17 OR BACK OF FUSE BOX
Parking Lights GREEN (+) DRIVER KICK OR FUSE BOX
Low Crr. Pk Lights GREEN (-) STEERING COLUMN HARNESS
Brake Lights GREEN / WHITE (+) AT SWITCH ABOVE BRAKE PEDAL
Reverse Lights RED / BLACK (+) IN HARNESS IN DRIVERS KICKPANEL
Horn BLACK / YELLOW (-) IN STEERING COLUMN HARNESS
Modules
WIRE LOCATION
Module 1 ECM LOCATED BEHIND THE GLOVE BOX
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock LT.GREEN/ RED (-) IN DRIVERS DOOR
SEE TOYOTA/LEXUS LOCK SENSE VEHICLE DOCUMENT.
PowerLock LT.GREEN/ BLACK (-) IN DRIVERS DOOR
FOR TOYOTA LOCK INTEGRATION
Child Safety Wire RED / YELLOW (-) IN DRIVERS DOOR
Driver Mtr Unlock RED / BLACK (REV) IN HARNESS IN DRIVERS KICKPANEL
Driver Mtr Lock BLUE/RED (REV) IN HARNESS IN DRIVERS KICKPANEL
Pas Mtr Unlock BLUE/BLACK (REV) IN HARNESS IN DRIVERS KICKPANEL
LF Window Up RED (REV) IN DRIVER'S DOOR
LF Window Dn GREEN (REV) IN DRIVER'S DOOR
RF Window Up RED (REV) IN PASSENGER'S DOOR
RF Window Dn GREEN (REV) IN PASSENGER'S DOOR
LR Window Up WHITE/ RED (REV) UNDER DRIVER'S SILL PLATE
LR Window Dn BLUE (REV) UNDER DRIVER'S SILL PLATE
RR Window Up GREEN/ YELLOW (REV) BLACK 14 PIN CONNECTOR IN DRIVER'S KICK PANEL
RR Window Dn BLUE (REV) BLACK 14 PIN CONNECTOR IN DRIVER'S KICK PANEL