Vehicle Wiring Details for a
2003 Dodge Caravan
Item Wire Color Polarity Wire Location
12V Lt blue/red 10A (1) Positive (+) Ignition harness
Starter Yellow Positive (+) Ignition harness
Starter 2 Purple/brown (11) - Ignition harness
Ignition Pink/white Positive (+) Ignition harness
2nd Ignition
3rd Ignition
Accessory NA
Accessory 2
Tachometer (6) ignition coil pack
Power Door (Lock)
Wiring Diagram for
[Negative (-)] Door Lock
Purple/green (3) Negative (-) Conn. 3, pin 21 at BCM (2)
Power Door (Unlock)
Wiring Diagram for
[Negative (-)] Door Unlock
same wire Negative (-) Conn. 3, pin 21 at BCM (2)
Door Trigger (4) - BCM (2)
Dome Supervision
Wiring Diagram for
[] Dome
Use door trigger
Headlights
Parklight Positive NA
Parklight Negative white/brown (8) - Headlight switch
Wipers
Left Front Window
(Up/Down)
Right Front Window
(Up/Down)
Left Rear Window
(Up/Down)
Right Rear Window
(Up/Down)
Trunk/Hatch Pin Purple/orange (9) - Conn. 3, pin 29 at BCM (2)
Hood Pin Purple/lt. blue - Conn. 3, pin 30 at BCM (2)
Trunk/Hatch Release
Wiring Diagram for
[] Trunk/Hatch
(10) (10)
Factory Alarm
(Arm)
Purple/lt. blue (5) conn. 3, pin 14 at BCM (2)
Factory Alarm
(Disarm)
Same wire
Horn Green/purple - Steering column
Brake White/tan + Brake pedal switch
Door Motor
(Lock)
Tan/white Conn. 2, pin 10 at BCM (2)
Door Motor
(Unlock)
Tan/lt. green Conn. 2, pin 28 at BCM (2)
Disarm Tan/brown Conn. 2, pin 26 at BCM (2)
Disarm No Unlock
Additional Info:
Chrysler vehicles that use a gray ignition key have an immobilizer system that needs to be bypassed when remote starting. Use Commando part number Transmod . (1) This wire is rated at 10 amps only. If installing any system with high current outputs, go to battery for 12v. (2) The BCM is in the drivers kick panel near the parking brake. It has 5 plugs in it, one 6 pin plug and four 34 pin plugs. (3) Lock is negative trigger thru a 5.3K ohm resistor. Unlock is negative trigger thru a 2.0K ohm resistor. MUST use relays. (4) There are separate door triggers for each door, they are all in connector 3 at the BCM. The driver door trigger is purple in pin 6, the passenger door is purple/white in pin 7, the left sliding door is purple/gray in pin 8, and the right sliding door is purple/yellow in pin 5. Use all four and diode isolate each. . (5) Arm is negative trigger thru a 1.5K ohm resistor, this will also lock the doors. Disarm is negative trigger thru a 9.1K ohm resistor, if use double pulse this will also unlock the doors. MUST use relays. (6) On the 2.4L use blue/green or blue/tan. On the 3.3L/3.8L use blue/green, blue/tan or blue/orange. (7) The PCM is behind the driver side headlight. VSS is in the gray plug, pin 66. (8) The parking lights are negative trigger thru a 2.1K ohm resistor. The headlights are negative trigger thru a 790 ohm resistor. There is a rest resistance on the wire, so MUST use a relay to isolate away from the switch. (9) A diode must be placed inline on this wire to avoid problems with the dome lights and parking lights. (10) Hatch release is purple/tan in connector 2, pin 6 at the BCM. It is negative trigger thru a 1.69K ohm resistor. Left power sliding door is purple/blue in connector 3, pin 1 at the BCM. It is negative trigger thru a 1.5K ohm resistor. Right power sliding door is the same wire as the left and it is negative trigger thru a 2.7K ohm resistor. Must use relays. (11) The second starter wire is negative trigger thru a 180 ohm resistor. MUST use relay.

ATTENTION: This wiring information is being provided free of charge and on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it by using a digital multimeter. GNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance upon this information.

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