2003 Tahoe

| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|red & red/white |+ |ignition harness |
| STARTER|yellow |+ |ignition harness |
| IGNITION|pink |+ |ignition harness |
| SECOND IGNITION|white |+ |ignition harness |
| ACCESSORY|orange |+ |ignition harness |
| SECOND ACCESSORY|brown |+ |ignition harness |
| POWER LOCK|use Directed module | | |
| POWER UNLOCK|part #456G *3 | | |
| LOCK MOTOR|gray | |driver door module in door |
| UNLOCK MOTOR|tan | |driver door module in door |
| DISARM DEFEAT|tan | |driver rear door harness |
| PARKING LIGHTS +|brown | |driver kick panel |
| PARKING LIGHTS -|gray/black | |headlight switch |
| HEADLIGHTS|pink or white |- |headlight switch |
| DOOR TRIGGER|*1 |- |*1 |
| DOME SUPERVISION|comes on with disarm| | |
| TRUNK/HATCH PIN|pink/black |- |harness to BCM *2 |
| HOOD PIN| | | |
|TRNK/HTCH RELEASE| | | |
| FCTRY ALARM ARM| | | |
|FCTRY ALRM DISARM|lt. green |- |driver door module in door |
| TACHOMETER|NOT pink | |any fuel injector |
| SPEED SENSE| | | |
| BRAKE WIRE|white |+ |brake pedal switch |
| HORN TRIGGER|black or blk/yel |- |column or gray plug @ BCM *2|
| WIPERS| | | |
| LF WINDOW UP/DN|blue - brown |A |LF window switch in door |
| RF WINDOW UP/DN|lt. blue - tan |A |RF window switch in door |
| LR WINDOW UP/DN|blue - brown |A |LR window switch in door |
| RR WINDOW UP/DN|blue - brown |A |RR window switch in door |
| SUN RF OPN/CLOSE| | | |
| SUN ROOF LIMIT| | | |
| RADIO 12V| | | |
| RADIO GROUND| | | |
| RADIO SWITCH| | | |
| RADIO ILLUMINATE| | | |
| POWER ANTENNA| | | |
| LF SPEAKER| | | |
| RF SPEAKER| | | |
| LR SPEAKER| | | |
| RR SPEAKER| | | |


Notes:
NOTE: This vehicle has the passlock II immobilizer system that, when adding a
remote start, must be interfaced with. Use DEI part 555t or 555L. *1 The
driver door trigger is gray/black at the driver door module in the door. The RF
door trigger is black/white at the passenger door module in the door. The LR
door trigger is lt. blue/black and the RR is lt. green/black, they are in a
harness in front of the fusebox leading to the BCM rear plug. Use all four
wires and diode isolate each. *2 The BCM (Body Control Module) is located
behind the headlight switch. *3 If Directed module part #456G is not
available, refer to directfax document #1601. Upper trim level vehicles may
have a door lock switch on the right rear panel. If present use white (-) for
lock and lt. blue (-) for unlock.