Isuzu  Ascender 2003-
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   IGNITION SWITCH HARNESS
 STARTER  YELLOW(+)  IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK(+)  IGNITION SWITCH HARNESS
 IGNITION 2  WHITE (+) See NOTE *3  IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  GRAY/BLACK (-)  @ HEADLIGHT SWITCH
 PARKING LIGHTS ( + )  BROWN (+)  IN DRIVERS KICK PANEL
 POWER LOCK  See NOTE *1  SEE DIAGRAM
 POWER UNLOCK  Same wire, See NOTE *1  SEE DIAGRAM
 DOOR TRIGGER  GRAY/BLACK (+)  @ UNDERDASH LIGHT
 DOMELIGHT SUPERVISION  USE DOOR TRIGGER, Requires Part #775 Relay  
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-) or BLACK/YELLOW (-)  @ STEERING COLUMN HARNESS
 TACH  WHITE  @ PCM, BLUE PLUG, PIN 49, See NOTE *2
 WAIT TO START LIGHT  N/A  
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   LIGHT GREEN (-)  @ DRIVERS DOOR MODULE in DRIVERS DOOR
 ANTI-THEFT  YELLOW (+), ORANGE/BLACK (-) and RED/WHITE (Not used)  GM's PASSLOCK 2 System, these wires exit the Ignition Switch Tumbler together and are in the Main Ignition Switch Harness in the Column.
 EXTRA INFORMATION
 NOTE *1 this vehicle uses a Special Multi-plex Type Door Locking System that will require extra Relays to do the Door Locks and Rear Hatch Release, See DIAGRAM or you can now get the New EZ-BUS Module to do the Door Locks and Hatch Release without the extra relays on this vehicle, to order contact 1-800-659-0764. NOTE *2 THE PCM (POWERTRAIN CONTROL MODULE) IS ON THE DRIVER SIDE OF THE MOTOR. NOTE *3 IMPORTANT!!!!! THIS WIRE MUST BE CONNECTED AS IGNITION #2 FOR REMOTE STARTING!!!!!