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Thread: Strictly using AutoEnginuity to add options, sales codes, etc. Reply to Thread
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  Topic Review (Newest First)
09-24-2019 04:40 PM
Laramie2017
Quote:
Originally Posted by 07Dually View Post
Laramie2017
Even though my Laramie (2017 3500 DRW - pickup bed & not C&C) came with stock LED Ram tail lights, when a flatbed (with LEDs) was installed on my truck I had a similar issue (bulb out & fast blink).
I found that with my tail lights there is an additional wire (in addition to the + & -) that somehow checks for a bulb out (I believe an intermittent ground - however I would not connect it to ground).

Instead check out this thread: https://www.cumminsforum.com/forum/2...l#post27622666
and the linked pdf : https://www.ramtrucks.com/assets/bbg...ram/ramelm.pdf
Option B fixed my problem (note this was before I discovered AlfaOBD).
Good luck
Hello, really thanks but i want to do this like OEM, i mean, when really bulb is broken on dash i can see „rear turn lught out”
And i know it is possible but idk how yet 😛

One more think, after all changes oem controll cabel is still on, i mean idk why but i have to connect extra resistor to oem control cable then „light out” on dash disappear.. and i really want to do this like oem, When really light is out it shows this on dash 🙄
09-24-2019 01:47 PM
07Dually Laramie2017
Even though my Laramie (2017 3500 DRW - pickup bed & not C&C) came with stock LED Ram tail lights, when a flatbed (with LEDs) was installed on my truck I had a similar issue (bulb out & fast blink).
I found that with my tail lights there is an additional wire (in addition to the + & -) that somehow checks for a bulb out (I believe an intermittent ground - however I would not connect it to ground).

Instead check out this thread: https://www.cumminsforum.com/forum/2...l#post27622666
and the linked pdf : https://www.ramtrucks.com/assets/bbg...ram/ramelm.pdf
Option B fixed my problem (note this was before I discovered AlfaOBD).
Good luck
09-24-2019 01:15 PM
Laramie2017
Quote:
Originally Posted by Jimmy07 View Post
Quote:
Originally Posted by Laramie2017 View Post
Still the same
And If i change combinated, trailer stop/turn are still together 🤣 magic
Ok. Make sure you are back to combined rear lighting disabled, rear turn output set, and leave led rear turns set. We need to try to disable the fault sense wires that go to each tail light housing. There should be two settings in CBC I/O Usage related to “rear door ajar” or “sliding door ajar”. These are what are actually used for the rear fault sense wires on our Ram trucks. I know you said you didn’t see them, but double check. They would be in the same section as “hood ajar switch USAGE (not INPUT)”.
If you don’t have those settings, you could disable the rear lighting DTC setting under CBC features. If you do this, you won’t get an alert if any of your rear bulbs are actually out.

Then, there’s a last resort of adding resistors to the rear turn signal driver wires, but, I’m sure you want to avoid doing this.
Ok i’ll try this all but on monday. Now my car is in paintshop 😕
I’ll do than photos of all my options and send to you.

Ps. And this problem is only with sport led lights.. in normal bulb light like in slt after „combinated not set”, „rear turn output set” and connect to bcm all is fine, when light Is blinking all is ok, when i takie out the bulb it shows light out, so it works as it should.. so i think it is possible to make it right 😕
09-24-2019 01:06 PM
Jimmy07
Quote:
Originally Posted by Laramie2017 View Post
Still the same
And If i change combinated, trailer stop/turn are still together 🤣 magic
Ok. Make sure you are back to combined rear lighting disabled, rear turn output set, and leave led rear turns set. We need to try to disable the fault sense wires that go to each tail light housing. There should be two settings in CBC I/O Usage related to “rear door ajar” or “sliding door ajar”. These are what are actually used for the rear fault sense wires on our Ram trucks. I know you said you didn’t see them, but double check. They would be in the same section as “hood ajar switch USAGE (not INPUT)”.
If you don’t have those settings, you could disable the rear lighting DTC setting under CBC features. If you do this, you won’t get an alert if any of your rear bulbs are actually out.

Then, there’s a last resort of adding resistors to the rear turn signal driver wires, but, I’m sure you want to avoid doing this.
09-24-2019 12:09 PM
Laramie2017
Quote:
Originally Posted by Jimmy07 View Post
[
The rear turn control wires are only for the 7-pin trailer connector’s turn signals.

What happens if you change led rear turn back to “set”?
Still the same
And If i change combinated, trailer stop/turn are still together 🤣 magic
09-24-2019 11:46 AM
Jimmy07
Quote:
Originally Posted by Laramie2017 View Post
I add those wires + change led rear turn to „not set” and still „rear left and rear light out” 😕
Maybe have to do sth with control wire in lamp ? I use reverse bulbs as turn .
The rear turn control wires are only for the 7-pin trailer connector’s turn signals.

What happens if you change led rear turn back to “set”?
09-24-2019 11:34 AM
Laramie2017
Quote:
Originally Posted by Jimmy07 View Post
[
I didn’t look at the connector sheet and spoke too soon. These are the two that need to be used. The turn signal drivers, not controls. So, C5/E connector pin 3, and C6/F connector pin 42. I think you might actually have to add those wires to the connectors. Since you have the settings correct, everything should work once you hook these up.
I add those wires + change led rear turn to „not set” and still „rear left and rear light out” 😕
Maybe have to do sth with control wire in lamp ? I use reverse bulbs as turn .
09-24-2019 10:42 AM
Jimmy07
Quote:
Originally Posted by Laramie2017 View Post
Ok, but ive found other pin look like rear turn signal.. plug f pin 42 look like rear right turn signal, plug e pin 3 look like left rear turn signal.
Plug e and f got rear left and right turn signal control and rear left and right lamp lighting fault sense maybe you know how to corrently connector this all ?

Ps. I enable rear turn output and combinated rear light not set. On oem rear turn/stop light is now just stop
I didn’t look at the connector sheet and spoke too soon. These are the two that need to be used. The turn signal drivers, not controls. So, C5/E connector pin 3, and C6/F connector pin 42. I think you might actually have to add those wires to the connectors. Since you have the settings correct, everything should work once you hook these up.
09-24-2019 09:30 AM
Laramie2017
Quote:
Originally Posted by Jimmy07 View Post
Quote:
Originally Posted by Laramie2017 View Post
Maybe someone know, is possible to change wires in bcm to use oryginal rear turn signal controll to my turn bulb ?
I saw that plug F pin 36 is left rear turn signal control, and
Plug E pin 22 is right rear turn signal control but i dont exactly know how to use this pins to control my bulbs 😕
Hope you understand
Yes. This is exactly what you need to do. I misunderstood you and thought you had already done this. Those wires SHOULD be there at the BCM already. I’m just not sure where in the body harness they end, since they’re not normally used unless someone is trying to do what you are doing. You need to find them and hook them up to your amber turn signal bulbs you are planning on using. Then you need to enable the rear turn lamps output in CBC configurable inputs and outputs. You also need to disable combined rear lighting in CBC features.
Ok, but ive found other pin look like rear turn signal.. plug f pin 42 look like rear right turn signal, plug e pin 3 look like left rear turn signal.
Plug e and f got rear left and right turn signal control and rear left and right lamp lighting fault sense maybe you know how to corrently connector this all ?

Ps. I enable rear turn output and combinated rear light not set. On oem rear turn/stop light is now just stop
09-24-2019 08:37 AM
Jimmy07
Quote:
Originally Posted by Laramie2017 View Post
Maybe someone know, is possible to change wires in bcm to use oryginal rear turn signal controll to my turn bulb ?
I saw that plug F pin 36 is left rear turn signal control, and
Plug E pin 22 is right rear turn signal control but i dont exactly know how to use this pins to control my bulbs 😕
Hope you understand
Yes. This is exactly what you need to do. I misunderstood you and thought you had already done this. Those wires SHOULD be there at the BCM already. I’m just not sure where in the body harness they end, since they’re not normally used unless someone is trying to do what you are doing. You need to find them and hook them up to your amber turn signal bulbs you are planning on using. Then you need to enable the rear turn lamps output in CBC configurable inputs and outputs. You also need to disable combined rear lighting in CBC features.
09-24-2019 06:47 AM
Laramie2017 Maybe someone know, is possible to change wires in bcm to use oryginal rear turn signal controll to my turn bulb ?
I saw that plug F pin 36 is left rear turn signal control, and
Plug E pin 22 is right rear turn signal control but i dont exactly know how to use this pins to control my bulbs 😕
Hope you understand
09-20-2019 03:32 PM
Laramie2017 I dont have this option in cbc 😕
And i dont know how one of workshop in out town programm this as normal turn light
I mean When u takie out the bulb it shows that light is out, If you put it again works normal
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