2003 and 2004 Dodge Ram’s

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=22042
Printed Date: May 11, 2025 at 8:55 PM

Topic: 2003 and 2004 Dodge Ram’s

Posted By: daniel2002p
Subject: 2003 and 2004 Dodge Ram’s
Date Posted: November 27, 2003 at 4:01 PM

Does anyone have this problem as well?

When I install a alarm in this vehicle (the 6cyl, 8cyl, or HEMI) the Engine Light comes on and requires a trip to the dealer to be fixed. The Last alarm w/remote start I have put in a 2004 Ram with the 8cyl and the3 light came on. It cost our shop $75 to get code erased and delaer said computer has nothing to report, but light came on. Anyone else have that same problem.

BTW: It does the same weather the unit is a alarm, or alarm w/ remote start.

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2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

Replies:

Posted By: auex
Date Posted: November 27, 2003 at 4:15 PM

Did you power up all the ingition wires?

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: securinu
Date Posted: November 27, 2003 at 5:58 PM

you can get a code scan tool that resets lights at local autoparts store for about $150 . we all make mistakes from time to time and forget to power up a wire but for $150 its cheap insurance and the customer never needs to know anything that wont ultimately hurt the vehicle. just my $.02

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Joe O'Byrne
Owner / Installer

Posted By: daniel2002p
Date Posted: November 27, 2003 at 8:48 PM

It is not only with remote starts (and yes all the ign wire are powered up) but also with just an alarm? Any other clues???

-------------
2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

Posted By: chpsk8
Date Posted: November 27, 2003 at 10:59 PM

My installer had to power all the ingnition wires in order to get my check engine light off. I had two where the wiring diagram showed one. Confused them pretty good. I had a Compustar model installed and it took a couple trips to get it right. My problem was if I used the autostart the check engine light went on. Then I had to disconnect the battery to reset it. After powering all the ignition wires the probelm went away.

Posted By: 03zx3
Date Posted: November 27, 2003 at 11:32 PM

Wire/Function	Colour	Location/Description	Polarity

PASSIVE ANTI-THEFT	YES	TRANSPONDER	SEE NOTES
12 VOLTS	RED / white or Pink/black	Ignition switch harness	+
IGNITION	Blue (smaller of 2)	Ignition switch harness	+
IGNITION 2	RED / white*	Ignition switch harness	+
ACCESSORY	Orange	Ignition switch harness	+
ACCESSORY 2	Green	Ignition switch harness	+
STARTER	Yellow	Ignition switch harness	+
TACH	BLACK/ gray or RED / black	At coil on right side of engine**	AC
FUEL INJECTOR	Opposite of Dk.GREEN/ orange	At any injector on engine	AC
LOCK	WHITE/ green***	In driver's kickpanel	-
UNLOCK	WHITE/ green***	In driver's kickpanel	-
DRIVER LOCK MOTOR	Tan/pink	In driver's kickpanel	+
DRIVER UNLOCK MOTOR	Blue	In driver's kickpanel	+
PASSENGER UNLOCK MOTOR	Tan/orange	In driver's kickpanel	+
DOORPIN	SEE NOTES*****
FACTORY ARM	Lt.GREEN/ orange***	In driver's kickpanel	-
FACTORY DISARM	Lt.GREEN/ orange***	In driver's kickpanel	-
BRAKESWITCH	WHITE/ tan	At switch on brake pedal bracket	+
PARKLIGHTS	Violet / YELLOW****	At light switch harness	-
HAND BRAKE	WHITE/ green	At switch on handbrake lever	-
HORN	BLACK/ red	At steering column	-
DRIVER WINDOW UP	White	At switch in driver's door	REV POL
DRIVER WINDOW DOWN	Lt.blue	At switch in driver's door	REV POL
PASSENGER WINDOW UP	BROWN / white	In driver's kickpanel	REV POL
PASSENGER WINDOW DOWN	Violet/white	In driver's kickpanel	REV POL
LEFT REAR WINDOW UP	Dk.blue/white	In driver's kickpanel	REV POL
LEFT REAR WINDOW DOWN	RED / black	In driver's kickpanel	REV POL
RIGHT REAR WINDOW UP	Gray/black	In driver's kickpanel	REV POL
RIGHT REAR WINDOW DOWN	Dk.GREEN / WHITE	In driver's kickpanel	REV POL
HEADLIGHTS	WHITE/ dk.green	At lieft headlight assembly	+
REVERSE LIGHTS	Violet/black	Under driver's side running board	+
VSS WIRE	WHITE/ orange	Pin-27 of 32-pin plug on PCM******
KEY SENSE	Lt.blue	At steering column	-

Vehicle notes

PLEASE NOTE: For the Ram 2500 and 3500, see the Dodge Ram 2500,3500 pickup 2002 in the database. This vehicle may be equipped with a TRANSPONDER passive anti-theft system. If the vehicle has GRAY ignition keys, see the appropriate diagram before any remote start installation.
* This wire is not always present, but if it is there, it must be connected or the check engine will come on.
** On the 3.9L, 5.2L and 5.9L engines, the tach wire can be found at the coil on the engine near the distributor. On the 8.0L V10 engine there are 2 coils packs on the right side of the engine. Use the BLACK/ GRAY at the 6-pack for a 2 cylinder reference.
*** This is a 1-wire system with resistors. If the vehicle is equipped with factory security, use the LT.GREEN/ ORANGE wire (2-Kohms for lock/arm and 480-ohms for unlock/disarm). A double pulse to unlock all doors. With no factory alarm, use the WHITE/ GREEN wire (815-ohms for lock and 315-ohms for unlock). Both wires are located in the driver’s side kickpanel. Relays should be used to insure a good ground to the resistors. See the doorlock diagram for exact wiring instructions.
**** Ground through a 330-Ohm resistor to activate parklights. You can also use a BLACK / YELLOW (+) in the large harness under the hood between the driver's side fender and the firewall.
***** Driver's door is TAN, Passenger door is TAN/RED, right rear is TAN / YELLOW and left rear is VIOLET/ORANGE. All 4 wires are found in a plug above the brake pedal. Diode isolate with 1N4001 diodes if connection together.
****** On right side of firewall in engine compartment.

Posted By: 03zx3
Date Posted: November 27, 2003 at 11:33 PM

hey just posted the colors look at vehicle notes.