2019 HD Tail lights in a 4th gen

[chrisbh17]

If someone didnt need to have the turn signals yellow would they still need the additional wiring/ back mods? I love the idea of these on my 16 but I definitely dont want to start running wires and spinning stuff all over the place. If a harness swap or wire swap at the lights end could get me 90% of functionality everything works but aesthetically different (red instead of yellow turns) I'd be game. It isnt clear to me since I read that a simplified hook up was available but you'd lose the yellow turns

AFAIK if you hook them up with an adapter harness to go from halogen to LED (or factory LED to these), as long as you dont touch any Alfa settings other than enabling LED if they werent already, you will have turn signals but they will be red instead of amber. So basically everything will work except the signals changing to amber and the blind spot monitors (if the set you bought have them)

I actually have the HD tails installed on my truck....they replaced the factory LED tails, which had replaced the halogen tails my truck came with. All I did was unplug the factory LED tails and plug the HD tails in and that was it.

 

[Sinistre1]

Ok because I was certain that's what I read but then it seemed maybe I was wrong. I know many want the oem look but it seemed like too much extra trouble for it to only be the yellow colored turns they were after good to know. I can put it back on my list of possible mods. Maybe consider adding that functionally at some later date. I can def lillie with red turn signals if nothing else is different... intensity, etc.

 

[Sinistre1]

Oh wait@ Chrisbh17, i already have factory leds on my sport. So are you saying I won't even need the harness at all? Just plug and play with red turn signals? I have to assume alfa is rear led- Y for me.

 

[chrisbh17]

Oh wait@ Chrisbh17, i already have factory leds on my sport. So are you saying I won't even need the harness at all? Just plug and play with red turn signals? I have to assume alfa is rear led- Y for me.

The HD tails have a different connector on them, so you will still need to adapt from the factory LED connector (6 pin) to the HD tail connector (12 pin)

 

[Sinistre1]

Gotcha. Thanks!

 

[superjoe83]

Oh wait@ Chrisbh17, i already have factory leds on my sport. So are you saying I won't even need the harness at all? Just plug and play with red turn signals? I have to assume alfa is rear led- Y for me.

You will have to disable the lamp fault sense wires with alfa, by using the brake as a turn signal, it does not toggle the sense wire to ground like using the amber turns would.

 

[Sinistre1]

Ok so either way I will need a harness and at least minimal alfaobd work. I wish I didn't mind the idea of running extra wires and depinning stuff but ifI go this route I can live with the all read and I think that it would bother me to run extra wiring in the truck. If running off the trailer didn't require the use of a relay I think that would be a cleaner set up and I would assume it doesn't require removing/ pinning under the dash and a short wire run that could be hidden in the tailgate or under the bumper or such. Decisions, decision. Lol.

 

[Roman217]

For anyone that is doing the swap and installing the gen 5 mirror glass into their tow mirrors for BSM, here are the BSM LED connectors and pins.
Connectors: https://www.molex.com/molex/products/part-detail/crimp_housings/0522130211
Pins: https://www.molex.com/molex/products/part-detail/crimp_terminals/0501488100

DigiKey carries both of these.

 

[Dragbug]

Pretty sure I read every post on every page but did not see anywhere that it was confirmed this would work on a 2016....? I think this is the only option I don't have that I wish I did. Already did the 8.4 radio upgrade now interested in this if possible. Yes, I can set my mirrors correctly (drive semi's for several years) but in Las Vegas I have legally tinted windows that are pretty dark and a lot of dumb asses don't like to turn on head lights until pitch black out.

Mine is a Laramie 3500 Crew Cab. Diesel if that makes any difference for can bus communication. So, will this work? I didn't see anything on the first post that resembled a list of what's needed. It's all buried through 61 pages of posts. If this can work on my truck, can someone PM me all the parts I need? Who sells what adapters/cables? Any help would be greatly appreciated!

 

[Roman217]

Pretty sure I read every post on every page but did not see anywhere that it was confirmed this would work on a 2016....? I think this is the only option I don't have that I wish I did. Already did the 8.4 radio upgrade now interested in this if possible. Yes, I can set my mirrors correctly (drive semi's for several years) but in Las Vegas I have legally tinted windows that are pretty dark and a lot of dumb asses don't like to turn on head lights until pitch black out.

Mine is a Laramie 3500 Crew Cab. Diesel if that makes any difference for can bus communication. So, will this work? I didn't see anything on the first post that resembled a list of what's needed. It's all buried through 61 pages of posts. If this can work on my truck, can someone PM me all the parts I need? Who sells what adapters/cables? Any help would be greatly appreciated!

Yes, it will work just fine in your truck.

Sent from my SM-N986U using Tapatalk

 

[Dragbug]

Yes, it will work just fine in your truck.

Sent from my SM-N986U using Tapatalk

Great! So...has anyone put together a kit and instructions? Minus the tail lights as that's the easy part. Everything is so scattered throughout this post.

 

[Roman217]

Great! So...has anyone put together a kit and instructions? Minus the tail lights as that's the easy part. Everything is so scattered throughout this post.

Here are the main portions of the harness build:

Here’s a recap on all the relevant parts, since they’re spread out all over the thread:
Black tails with sensors: right- 68361722AG. Left- 68361723AG
Red tails with sensors: right- 68361720AG. Left- 68361721AG
Red tails w/o sensors: right- 68361716AD. Left- 68361717AD
Black tails w/o sensors: right- 68361718AD. Left- 68361719AD

Connector for the new tail lights (2)- https://www.mouser.com/ProductDetail/Molex/33472-1206?qs=/ha2pyFaduikiq7sntUKklFniyFE49tpyMSiTJg1I/elJCuGpayWTA==
Terminals (22)- https://www.mouser.com/ProductDetail/Molex/33012-2002-Loose-Piece?qs=sGAEpiMZZMs7eK6h2EBtKrDPZUGUvv8SUd2LU%2BdwMiY=

For those converting from factory LED tails:
Male connector that plugs into truck harness (2)- https://www.mouser.com/ProductDetail/Aptiv-formerly-Delphi/54200612?qs=sGAEpiMZZMs7eK6h2EBtKgWB1t55%2BB6K6fB%2B9lf%2B2kk=
Terminals (10)- https://www.mouser.com/ProductDetail/Aptiv-formerly-Delphi/10762775-L?qs=sGAEpiMZZMs7eK6h2EBtKhDRfMCT%2B7X7dap2iVXRST8=

For those converting from factory incandescent tails:
3-way connector that plugs into truck harness (2) (modified- note in next post)- https://www.amazon.com/TOMALL-Conne...?keywords=h13+connector&qid=1572373980&sr=8-8

2-way connector that plugs into truck harness (2)- https://www.mouser.com/ProductDetail/Molex/34675-0001?qs=/ha2pyFaduiynKIuloyba55LF6atPJdu0covSY4EBkNKK2%2BYdIlUEw==
Terminals (4)- https://www.mouser.com/ProductDetail/Molex/34080-0002-Loose-Piece?qs=sGAEpiMZZMs7eK6h2EBtKrDPZUGUvv8SfKtkLnImnL4=

CAN IHS block connectors for blind spot (different for 2018) (2)- https://www.mouser.com/ProductDetail/TE-Connectivity-AMP/5-2138650-1?qs=/ha2pyFaduhl48SvsDVuHxxswWwr8CO9ptiNqs6/s%2BqKxTyAv0wlcQ==
Terminals (8- 4 for the IHS connectors and 4 for the door module connectors LED indicators)- https://www.mouser.com/ProductDetail/TE-Connectivity/5-963715-1-Cut-Strip?qs=sGAEpiMZZMs7eK6h2EBtKqn3zbhM2DVKtrIMWXHjrgM=

Large BCM terminals for the turn signal circuits (2)- https://www.mouser.com/ProductDetail/Kostal/22140492060050-L?qs=/ha2pyFaduj8oGXoX7vSDezsCEh/TeFPHxy2z8Kh8Nv44XLlKWlO4Q==

Small BCM terminals for those with factory incandescent tails to add light fault circuits (2)- https://www.mouser.com/ProductDetail/829-13627884-L?r=829-13627884-L

LED indicators that I used- https://www.amazon.com/PLUG-N-PLAY-Instrument-Indicator-Aluminum-Speedometer/dp/B01F2GT1ME/ref=mp_s_a_1_1?keywords=3+Pack+of+PLUG-N-PLAY+Instrument+Cluster+LED+Indicator+Light+Dash+Bulbs.+Aluminum+Pilot+Lights.+Color+Acrylic+Lens.+Flush+Panel+Mount+5/16"+8mm+12V+for+Speedometer+Odometer+(Black+Bezel,+Amber+LED)&qid=1572375248&sr=8-1

3/8” split wire loom

Tessa tape

~100’ 18-20awg wire. Good source- https://4rcustomswire.com/

~50’ twisted pair wire. I used- https://www.amazon.com/Jameco-Valuepro-Stranded-Twisted-Applications/dp/B00B887D80/ref=mp_s_a_1_1?keywords=Jameco+Valuepro+Stranded+Twisted+Pair+Cable,+24+AWG,+100'+Size,+Green/White,+Ideal+for+Voice+and+Data+Applications+-+224GW/C-R&qid=1572375357&sr=8-1

Recap on AlfaOBD settings and connector notes:
This is how I modified the H13 connector for the factory incandescent 3-way connector-



If you have factory incandescent tails, I suggest running the light fault sense wires up to the BCM just in case. Mine is a 2017 and I don’t need them enabled, but I don’t know how other years will react with the LEDs and bulb out detection. So, might as well just run them since you have to run two other wires to the BCM anyway.

I grabbed the run relay control from the backup camera tailgate/chassis connector, which is in plain view, and easy to get at between the bumper and spare tire.

Wires to connectors and pin numbers (incandescent factory tails)-

Pin 3 on the white door module connector (C1) is the blind spot LED signal. Pin 2 on the same connector is the blind spot LED return, which is shared with the puddle lamp return.

AlfaOBD settings to enable (all in car configuration change):

CBC I/O: rear turn lamps output present- yes

CBC features: combined rear lighting enabled- no

CBC Features: single element tail lamps- yes

LED reverse lamps present- yes

LED stop lamps present- yes

LED rear turn lamps present- no

LED tail lamps present- yes

CBC I/O Usage: left rear door ajar switch usage- left rear lamp diagnostics

CBC I/O Usage: right sliding door ajar switch usage- right rear lamp diagnostics

Doors: blind spot mirror present- yes

CustSetMenu 1: blind spot alert- yes

Programmed ECU cabin net: right blind spot sensor- yes

Programmed ECU cabin net: left blind spot sensor- yes

For the couple I put together, I used a pair of 10pin connectors to make a bypass for the tailgate connector to avoid cutting/tapping the factory wires.

Gen 4 LED connector pinout:
http://connectors.dcctools.com/details.htm?id=304333
Gen 5 LED connector pinout:
http://connectors.dcctools.com/details.htm?id=302036
Keep the pin 8 ground in mind on the right side. The left side does not need a pin 8 ground, the right side does as that is what is used for designating the left and right side for the sensors.

CAN IHS pin out:
http://connectors.dcctools.com/details.htm?id=301650
Door Module pin out for BSM LEDs:
http://connectors.dcctools.com/details.htm?id=208339
Pin 2 is the ground, pin 3 is the positive.

BCM C5 Pinout:
http://connectors.dcctools.com/details.htm?id=215372
BCM C6 Pinout:
http://connectors.dcctools.com/details.htm?id=215373

Mirror glass with BSM LEDs:
68401395AA
68401394AA

Let me know if you have questions, it is a ton of info to digest in a single post. I have all the wire lengths for the various cab/bed configurations as well.

 

[Dragbug]

Here are the main portions of the harness build:





For the couple I put together, I used a pair of 10pin connectors to make a bypass for the tailgate connector to avoid cutting/tapping the factory wires.

Gen 4 LED connector pinout:
http://connectors.dcctools.com/details.htm?id=304333
Gen 5 LED connector pinout:
http://connectors.dcctools.com/details.htm?id=302036
Keep the pin 8 ground in mind on the right side. The left side does not need a pin 8 ground, the right side does as that is what is used for designating the left and right side for the sensors.

CAN IHS pin out:
http://connectors.dcctools.com/details.htm?id=301650
Door Module pin out for BSM LEDs:
http://connectors.dcctools.com/details.htm?id=208339
Pin 2 is the ground, pin 3 is the positive.

BCM C5 Pinout:
http://connectors.dcctools.com/details.htm?id=215372
BCM C6 Pinout:
http://connectors.dcctools.com/details.htm?id=215373

Mirror glass with BSM LEDs:
68401395AA
68401394AA

Let me know if you have questions, it is a ton of info to digest in a single post. I have all the wire lengths for the various cab/bed configurations as well.

Awesome, thank you! I saw one of the posts you made that mentioned an arduino box for something. Is that also something I would need? Has anyone already created a completed harness for purchase?

 

[Roman217]

The conversion module is only needed for the 1500s to get rid of a vehicle line error. The BSMs are plug and play in the HDs.

Sent from my SM-N986U using Tapatalk

 

[CustomExpress]

@Roman217, I just realized I never responded to you. I have the Crew Cab 5'7 bed.

 

[DonnyP]

Is their a full list of 2500HD LED tails that will fit our 4th gen? I found some tails for a reasonable deal and have no clue if they will work.

Part #'s
R - 68446838AE
L - 68446839AE

R - 68446840AE
L - 68446841AE

 

[Jhuss96]

If I’m running the retroshop conversion harness is it still possible to get the blind spot indicators working on my 2016 1500?

 

[Roman217]

If I’m running the retroshop conversion harness is it still possible to get the blind spot indicators working on my 2016 1500?

If you have tailights that have the BSM sensors, you could add the additional wiring. You would need to add the following:

• CAN IHS lines for each sensor
• Power and ground for the left tail light sensor
• Power and grounds for the right tail light sensor
• LEDs wired to the door modules

The CAN wiring would need to run to the front of the cab to the CAN IHS junction under the steering wheel. You may as well run the turn signal wiring to the BCM as well since it sits by the steering column as well and you're going to be using AlfaOBD to activate BSM so it's trivial to activate the turn signal output at that point.

If you have a 1500, you will need a module to get rid of the vehicle configuration mismatch DTC that is set in the BSMs.

Overall, it is no different than making your harness or using any other harness to fill in blanks to connect everything to where it needs to go.

In your case, you would have to pin four more wires into the left side and five on the right side. Power can be tapped at the tailgate connector or at the fuse box.

 

[Kalill Nieto]

Hello guys. I hope everybody is good and healthy. Happy sunday...

I have a concern. I am making a harness adapter from 4th Leds taillights to a 5th Leds taillights. If I connect the faul sense lighting from the 4th gen to the 5th taillights I help the bcm to avoid some kind of fault ligting?

Thanks in advantage.

 

[Kalill Nieto]

Good morming guys. Nobody know about the sense connection or is a secret?