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2002 Dodge Ram Factory Alarm Bypass, Wiring

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=3349
Printed Date: May 11, 2024 at 9:39 PM


Topic: 2002 Dodge Ram Factory Alarm Bypass, Wiring

Posted By: steve1976
Subject: 2002 Dodge Ram Factory Alarm Bypass, Wiring
Date Posted: September 05, 2002 at 10:43 AM

I need the factory alarm bypass wire for a 2002 dodge ram.



Replies:

Posted By: the12volt
Date Posted: September 05, 2002 at 10:51 AM

HI steve1976,  the factory disarm lead is Light GREEN/ Orange in the driver's kick panel. You'll need to pass a ground pulse through a 1500 ohm resistor to disarm the alarm.

To arm it, pass another ground pulse through a 760 ohm resistor on the same lead.





Posted By: steve1976
Date Posted: September 05, 2002 at 10:55 AM
Thanks, alot.




Posted By: Lenknermj
Date Posted: November 11, 2002 at 4:46 PM

Is this alarm the same thing as the 'Sentry Key' that Dodge uses?  I'm not sure if we're considering that a factory alarm system or not.

Additionally, I need to know of the workaround for this to install a remote starter, not an alarm system.  Same rules for me?





Posted By: Velocity Motors
Date Posted: November 13, 2002 at 5:33 AM

No it is not. The Sentry system is the GREY colored keys and you need a bypass module for this. The alarm bypass is just ot defeat the OEM security system while remote starting so you do not get the horn and lights flashing. Here is the wiring diagram for the 2002 truck :

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|pnk/blk & RED / wht   |+  |ignition harness            |
|          STARTER|yellow              |+  |ignition harness            |
|         IGNITION|blue     (16 awg)   |+  |ignition harness            |
|  SECOND IGNITION|red or RED / wht      |+  |ignition harness            |
|        ACCESSORY|green & orange      |+  |ignition harness            |
| SECOND ACCESSORY|blue & blk/wht *7   |+  |ignition harness            |
|       POWER LOCK|WHITE/ green *1      |-  |driver kick panel           |
|     POWER UNLOCK|same wire           |   |                            |
|       LOCK MOTOR|tan/pnk or tan/blk  |   |driver kick panel           |
|     UNLOCK MOTOR|blue                |   |driver kick panel           |
|    DISARM DEFEAT|tan/white           |   |passenger kick panel        |
| PARKING LIGHTS +|BLACK / YELLOW        |   |relay under hood at pwr ctr |
| PARKING LIGHTS -|purple / YELLOW *2    |   |headlight switch            |
|       HEADLIGHTS|purple / YELLOW *2    |-  |headlight switch            |
|     DOOR TRIGGER|*3                  |-  |*3                          |
| DOME SUPERVISION|use door trigger    |   |                            |
|  FCTRY ALARM ARM|lt GREEN/ orange *4  |-  |driver kick panel           |
|FCTRY ALRM DISARM|same wire           |   |                            |
| DISARM NO UNLOCK|same wire           |   |                            |
|       TACHOMETER|NOT GREEN/ orange    |   |ign coil, coil pac, injector|
|      SPEED SENSE|WHITE/ orange        |   |conn. 2, pin 27 @ PCM *5    |
|       BRAKE WIRE|WHITE/ tan           |+  |brake pedal switch          |
|     HORN TRIGGER|BLACK/ red           |-  |steering column             |
|           WIPERS|brn/wht(L),rd/yel(H)|+  |wiper motor                 |
|  LF WINDOW UP/DN|lt blue - white     |A  |driver window switch        |
|  RF WINDOW UP/DN|brn/wht - pur/wht   |A  |driver kick panel           |
|  LR WINDOW UP/DN|RED / blk - blu/wht   |A  |driver kick panel           |
|  RR WINDOW UP/DN|grn/wht - gry/blk   |A  |driver kick panel           |
|        RADIO 12V|pink                |+  |radio                       |
|     RADIO GROUND|BLACK/ green         |-  |radio                       |
|     RADIO SWITCH|BROWN / red           |+  |radio                       |
| RADIO ILLUMINATE|ORANGE / blue (dimmer)|+  |radio                       |
|       LF SPEAKER|lt grn/rd-lt grn/grn|   |radio or amplifier *6       |
|       RF SPEAKER|lt blu/pu-lt blu/blk|   |radio or amplifier *6       |
|       LR SPEAKER|wht/red - wht/blk   |   |radio or amplifier *6       |
|       RR SPEAKER|tan/pur - tan/blk   |   |radio or amplifier *6       |

Notes:
NOTE: For the 2002 Ram 2500/3500, refer to the 2001 techsoft sheet.    NOTE:  Chrysler vehicles that use a gray ignition key have an immobilizer system that needs to be bypassed when remote starting.   *1 Lock requires a negative trigger thru a 820 ohm resistor. Unlock requires a negative trigger thru a 330 ohm resistor. MUST use relays.  *2 Parking lights require a negative trigger thru a 330 or 1.4K ohm resistor. Headlights require a negative trigger thru a 1.8K ohm resistor. There is a rest resistance on the wire, so MUST use a relay to isolate away from the switch.  *3 The LF door trigger is tan, and the LR door is tan/orange. These wires are in the driver kick panel. The RF door trigger is tan/red, and the RR door is tan / YELLOW. These wires are in the passenger kick panel. Use all wires and diode isolate each..  *4 This will also do door locks. Arm/lock is negative trigger thru a 2K ohm resistor. Disarm/unlock is negative trigger thru a 480 ohm resistor. Single pulse will do disarm without unlocking the doors. Unlock requires a double pulse. MUST use relays.  *5 The PCM (Powertrain Control Module) is on the passenger side firewall.  *6 The amplifier is located behind the glove box.  *7 These wires may not be necessary for remote start.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA





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