you could put a peizo inside the cabin, and a siren outside the car, but FYI if you tap the horn wire, every time you press the horn the peizo/siren will go off. So if you honk at someone a peizo in the car would pretty much ****.
12 Volts red/white or red (7.5A) + ignition harness
Second 12 Volts
Starter purple + ignition harness
Second Starter N/A
Ignition orange + ignition harness
Second Ignition N/A
Third Ignition N/A
Accessory brown/white (x2, common) + ignition harness
Second Accessory N/A
Third Accessory N/A
Keysense
Data Bus purple/red resistor ignition harness or BCM, 12 pin plug, pin 7
The BCM (Body Control Module) is behind the glove box, below the blower motor. See Tech Doc 1608 for interface information.
Can Bus High
Can Bus Low
Can Bus Sw
Power Lock brown/white - BCM, 26 pin plug, pin 17
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Power Unlock lt. green/yellow - BCM, 26 pin plug, pin 16
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Lock Motor black/yellow 5wi BCM, 26 pin plug, pin 10
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Driver Unlock Motor blue/black 5wi BCM, 26 pin plug, pin 8
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Passenger Unlock Motor black/red 5wi BCM, 26 pin plug, pin 1
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Parking Lights (-) blue - headlight switch
Parking Lights (+) brown + fuse block or passenger kick
Hazards brown - switch or BCM, 16 pin plug, pin 16
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Turn Signal (Left) lt. blue + switch or BCM, 22 pin plug, pin 4
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Turn Signal (Right) blue + switch or BCM, 22 pin plug, pin 3
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Headlight white/black - headlight switch
AutoLights
Reverse Light lt. green + passenger kick, harness to rear
Left Front Door Trigger gray/white (L), white ® - BCM, 26 pin plug, pins 19 and 4
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Right Front Door Trigger
Left Rear Door Trigger
Right Rear Door Trigger
Dome Supervision use door trigger wire
Trunk/Hatch Pin yellow/green - BCM, 26 pin plug, pin 6
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Rear Glass Pin
Hood Pin red/white - BCM, 12 pin plug, pin 11
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Trunk/Hatch Release black/red - switch or BCM, 16 pin plug, pin 8
The BCM (Body Control Module) is behind the glove box, below the blower motor. Fuel door release is purple/white at the switch on the dash. It is a high current negative trigger, so MUST use a relay.
Trunk Release Motor
Fuel Door Release
Power Sliding Door (Left) N/A
Power Sliding Door (Right)
Factory Alarm Arm factory remote only
Factory Alarm Disarm factory remote only
Disarm No Unlock with key code and ignition
Trunk Alarm Shunt
Tachometer brown/red or brown ac ECM, blue plug, pin 48
The ECM (Engine Control Module) is on the driver side fender, under the coolant reservoir. The tach wire is also in the driver kick, in a plug above the PIM (Powertrain Interface Module), in pin 25.
Wait to Start N/A
Neutral Safety
Clutch Pedal
Fuel Pump
Rear Defroster
Mirror Defroster
Left Front Heated Seat
Right Front Heated Seat
Speed Sense purple/white ECM, blue plug, pin 21
The ECM (Engine Control Module) is on the driver side fender, under the coolant reservoir. The VSS wire is also in the driver kick, in a plug above the PIM (Powertrain Interface Module), in pin 3.
Brake Wire blue/red + brake pedal switch
Parking Brake brown/orange - parking brake switch
Horn Trigger black/yellow - switch or BCM, 22 pin plug, pin 17
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Wipers gray/red (L), lt. blue/red (H) + windshield wiper switch
Left Front Window (Up/Down) green - yellow A driver kick, door harness
Right Front Window (Up/Down) blue/white - green/orange A passenger kick, door harness
good luck.
12 Volts red/white or red (7.5A) + ignition harness
Second 12 Volts
Starter purple + ignition harness
Second Starter N/A
Ignition orange + ignition harness
Second Ignition N/A
Third Ignition N/A
Accessory brown/white (x2, common) + ignition harness
Second Accessory N/A
Third Accessory N/A
Keysense
Data Bus purple/red resistor ignition harness or BCM, 12 pin plug, pin 7
The BCM (Body Control Module) is behind the glove box, below the blower motor. See Tech Doc 1608 for interface information.
Can Bus High
Can Bus Low
Can Bus Sw
Power Lock brown/white - BCM, 26 pin plug, pin 17
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Power Unlock lt. green/yellow - BCM, 26 pin plug, pin 16
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Lock Motor black/yellow 5wi BCM, 26 pin plug, pin 10
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Driver Unlock Motor blue/black 5wi BCM, 26 pin plug, pin 8
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Passenger Unlock Motor black/red 5wi BCM, 26 pin plug, pin 1
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Parking Lights (-) blue - headlight switch
Parking Lights (+) brown + fuse block or passenger kick
Hazards brown - switch or BCM, 16 pin plug, pin 16
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Turn Signal (Left) lt. blue + switch or BCM, 22 pin plug, pin 4
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Turn Signal (Right) blue + switch or BCM, 22 pin plug, pin 3
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Headlight white/black - headlight switch
AutoLights
Reverse Light lt. green + passenger kick, harness to rear
Left Front Door Trigger gray/white (L), white ® - BCM, 26 pin plug, pins 19 and 4
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Right Front Door Trigger
Left Rear Door Trigger
Right Rear Door Trigger
Dome Supervision use door trigger wire
Trunk/Hatch Pin yellow/green - BCM, 26 pin plug, pin 6
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Rear Glass Pin
Hood Pin red/white - BCM, 12 pin plug, pin 11
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Trunk/Hatch Release black/red - switch or BCM, 16 pin plug, pin 8
The BCM (Body Control Module) is behind the glove box, below the blower motor. Fuel door release is purple/white at the switch on the dash. It is a high current negative trigger, so MUST use a relay.
Trunk Release Motor
Fuel Door Release
Power Sliding Door (Left) N/A
Power Sliding Door (Right)
Factory Alarm Arm factory remote only
Factory Alarm Disarm factory remote only
Disarm No Unlock with key code and ignition
Trunk Alarm Shunt
Tachometer brown/red or brown ac ECM, blue plug, pin 48
The ECM (Engine Control Module) is on the driver side fender, under the coolant reservoir. The tach wire is also in the driver kick, in a plug above the PIM (Powertrain Interface Module), in pin 25.
Wait to Start N/A
Neutral Safety
Clutch Pedal
Fuel Pump
Rear Defroster
Mirror Defroster
Left Front Heated Seat
Right Front Heated Seat
Speed Sense purple/white ECM, blue plug, pin 21
The ECM (Engine Control Module) is on the driver side fender, under the coolant reservoir. The VSS wire is also in the driver kick, in a plug above the PIM (Powertrain Interface Module), in pin 3.
Brake Wire blue/red + brake pedal switch
Parking Brake brown/orange - parking brake switch
Horn Trigger black/yellow - switch or BCM, 22 pin plug, pin 17
The BCM (Body Control Module) is behind the glove box, below the blower motor.
Wipers gray/red (L), lt. blue/red (H) + windshield wiper switch
Left Front Window (Up/Down) green - yellow A driver kick, door harness
Right Front Window (Up/Down) blue/white - green/orange A passenger kick, door harness
good luck.
