lights on 2002 dogde ram
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=18550
Printed Date: July 19, 2025 at 5:19 PM
Topic: lights on 2002 dogde ram
Posted By: italnpimp59
Subject: lights on 2002 dogde ram
Date Posted: September 06, 2003 at 12:04 AM
ok i got a question....i had to install a keyless entry on a dodge ram quad cab today...its a 2002. i checked wiring info in a few sources and they all said the parking light wire was violet / YELLOW and at the light switch. it was a negative wire and i have a positive pulse coming from the keyless entry brain. so i used a relay to have -12V pulse to the wire. well the lights did not work. i am hoping maybe one of you has worked on this vehicle before and might know how to get the lights to flash. someone pleeeease help!!! i returned the vehicle with everything working execpt the lights flashing....i got the customers number and i said i would personally come to his house and fix that as soon as i can figure out what the deal is with this weird light system. any help is greatly appreciated!! thanks in advance!
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Replies:
Posted By: 10nesne1
Date Posted: September 06, 2003 at 12:13 AM
Posted By: elrayodesinaloa
Date Posted: September 06, 2003 at 12:18 AM
Well I did one and it worked fine with the negative trigger but you need a resistor ( I can't remember the value) I also did another one but this time I went to the engine compartment I tapped into one of the parking light wires and it worked good as well. So, I got on one negative trigger with a resistor at the switch ,and on the other one, positive trigger on the engine compartment. Your choice If you wan't the value let me know so you can go to the switch.
Posted By: italnpimp59
Date Posted: September 06, 2003 at 10:28 AM
well i got a positive trigger coming from the alarm...so i used a relay to have a negative pulse go to the wire.
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Posted By: elrayodesinaloa
Date Posted: September 06, 2003 at 1:54 PM
Yes now add the resistor to the trigger wire it should work fine now.
Posted By: auex
Date Posted: September 06, 2003 at 3:47 PM
You can also find a positive trigger wire under the hood, I believe it is BLACK / YELLOW.
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Posted By: italnpimp59
Date Posted: September 06, 2003 at 7:02 PM
yeah most dodge chrystler jeep vehicles have a BLACK / YELLOW positive parking light wire. thats how it is in my Jeep and almost every other one i have worked on....i looked for that wire but i couldnt find it. well thanks everyone for your help. it turns out i did have the relay wired right but like elrayodesinaloa said, i need that 1400 ohm resistor to make the lights flash. it works...thanks alot for your help!
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Posted By: JWorm
Date Posted: September 06, 2003 at 9:17 PM
DODGE, RAM PICKUP, 2002, Parking Lights-
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.
I think all the ones I have done have used 330. I've also always isolated away from the switch. Don't know if its needed, but DEI recommends it.
86 - positive parking light output
85 - ground
87 - ground thru resistor
87a - switch side of purple / YELLOW parking light wire
30 - other side of wire
Test to make sure the resistor you are using is the correct value before wiring everything in. Just ground the wire thru the resistor directly and make sure just the parking lights go on. The wrong resistance can turn on the deadlights, which you don't want.
Posted By: Chris Luongo
Date Posted: September 07, 2003 at 8:06 PM
Don't worry so much about getting the right resistor. If the resistor is wrong, the headlights will flash at the same time the parking lights do----no big deal, and some people may even like it better.
You can get the BLACK / YELLOW positive wire underhood, in a large harness at the very top of the firewall, on the driver's side.........it's really easy, since it's right above the grommet where you'll probably want to pull your wire through.
Also, there are a couple of small wire bundles under the driver's dash, above where the driver's left foot would be. I found the BLACK / YELLOW in there, and it worked fine.
If all else fails, just flash the brake lights instead of the parking lights.........that's WHITE/ tan at the brake switch.
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