Not sure if this guy is ever going to give any details, but I don't see why we can't figure out what he did...1st step I just need to figure out part numbers for the RGB module that works with the LIN...but I've looked for a couple days w/o luck...it should be the same part in the titanium focus or perhaps even other vehicles around that year.

If you work it out, let me know please?

 

So what I have so far is this...I ordered more wiring diagrams to compare years, but comparing as-abuilts with As-Built Editor Ford Focus III (xtlt.ru) is easy and quick so I noticed this so far.

OK...so 2017+ Focus Titanium has option 5 and seem to have multi-color via the screen

2016 titanium seems to have a console module cm5z15b691a switching the ambient via

2016 and 2017/18 could be different wiring wise or All RSs are like some/late 2016 2017/2018 titanium. The 3 required wires already exist in all locations except above console.

My main unsolved question; confirmation of part number on their interior lights. Does anyone have access to one?? If we have 2 wires it may be as simple as just adding the ground wires to the DDM/PDM (like the original video says), adding the RGB modules, and enabling it correctly. Confirmations and additons BELOW

Mostly Confirmed** part numbers 2016

Footwell
BM5Z-13776-D / DS
BM5Z-13776-C / PS

Upper Door
BM5Z-13E700-D / DS
BV5Z-13E700-E / PS

Lower Door
BM5Z-13C626-D

Cupholder
BM5Z-13E700-C

Other Parts that may work or be useful (untested/unconfirmed)
BM5Z-13C626-C

 

2012-2018 Ford Focus Led Unit BM5Z-13C626-D | TascaParts.com

2012-2018 Ford Focus part # BM5Z-13C626-D - Led Unit

www.tascaparts.com

I think this might provide a few clues here:

• specifically states without RS
• image, which may or may not be correct has RGB written on it

I think finding the connector pin-out might tell us more

 

Okay 20 mins more research and I have good news. If you have ambient lighting, it's all RGB. There is no non-RGB or single colour ambient lighting. It communicates over LIN to the BCM according to the diagrams. Weirdly enough everything says there is no ambient lighting in the RS (which is false)

This means unless for some ridiculous reason the BCM won't do it, it should be possible to utilize the two other diodes with only software changes. Unless someone can find a RS specific LED module that is only red (unlikely)

 

Thx for the diagrams, is that the 2018 Focus RS (I have these) or the Focus 2018 (I don't have this as I lost it somewhere) wiring diagrams book? You know else what I just realized...the guy who did this is a member here lol...@TuanTran (its not letting me @ him for some reason, but I pvt msg'd him letting him know we could use some confirmations) if you are still around any PN confirmations would be amazing before I start ordering LED modules, (although I do believe we already found the parts) @StoddRS nice find on the Tasca picture, I overlooked that for sure.

"This means unless for some ridiculous reason the BCM won't do it, it should be possible to utilize the two other diodes with only software changes. Unless someone can find a RS specific LED module that is only red (unlikely)"

I've seen reports on CYANLABS that certain sync versions don't seem to play nice and may affect this ambient configuration via screen, so a confirmation of TTs Sync version will be nice also. SeniorGeek was replacing the red for blue LEDs, I feel like he would have noticed the RGB diode vs the single color led when performing the mods (the look different obviously)

 

The book says 2017 RS (I personally have a 16 doubt it matters). It's a strange disconnect because there is a special page for "with ambient lighting" but the connector locations and harnesses pages seem to say those LED units don't exist. I think we all have cup holder and door handle lighting so it is weird there is separate designations for with and without ambient lighting and weirder that no parts database acknowledge them on the RS

https://www.ford.ca/support/how-tos/more-vehicle-topics/lights-and-bulbs/how-do-i-adjust-the-ambient-lighting-in-my-vehicle/

Interesting note from here saying 17-19 F150 can't change colour, not sure if this is software or hardware related. Potentially could be our issue but too niche to get a footnote

I can't Imagine Ford making a separate LED module that only has red in a pre 2020 parts shortage era, the driver still communicates by LIN. Unless since all RSes were assembled in Germany they used whatever they had in the parts bin, do we know if the EU focus got RGB ambient lighting or maybe they have different diagrams?

I'm really leaning towards this being a software setting that isn't turned on, much like enabling on screen climate control. The video is the later and I think unofficial version of SYNC so that may have something to do with it.

It never made sense to me me that every other accent in this car is blue but they made the accent lighting red so I'm curious to get to the bottom of this

 

jefferysanders said:
Good to see you are a member here!!! I tried to msg you on YouTube, but I am not sure you have seen it to respond. I was wondering if you can help confirm what you did here? Interior RGB via Screen | Ford Focus RS Forum I think we mostly have it figured out with what you already stated, but if you have time, I know plenty will appreciate.

Hello,
You could get overview by Faint's explaination on ford-forum Germany
"
That's no longer the case with Sync 3! Up until Sync 2, there was a control module in the roof. With Sync 3, the LIN is fed by the BCM (which gets the color information from the APIM) and sent to the roof via C4. From there, the other LEDs in the vehicle are supplied via the roof-dashboard connector (without an additional control unit, just parallel).

The only difference between single and multicolor is the roof wiring harness. If you have single color, the ground of the LEDs (pin 2) is controlled via C4-1. If you have multicolor, the LIN is sent to the LEDs via C4-15 (also LED pin 2). In the original single color roof wiring harness, the ground on pin 3 (which is only needed for multicolor) was omitted - it is not needed. That's why you have to re-pin it in the roof when converting, otherwise nothing will light up there (but the rest of the vehicle will).

In the rest of the vehicle wiring harness, all 3 pins of the Ambi connector are always pinned, simply to keep the already incredibly high number of different wiring harnesses to a minimum.

In the old version with the roof console, only the roof wiring harness was different. Here the roof console received the information that the light needed to be switched on via LIN from the BCM (but not C4-15, the same LIN as the interior monitoring). The console itself then sent its own LIN to the LEDs, which the Sync 3 version simply generated itself via the BCM.

The pin assignment is as follows for single color:

Pin 1: interior plus
Pin 2: dimmed ground via C4-1 (BCM)

And for multicolor:

Pin 1: interior plus
Pin 2: LIN via C4-15 (BCM)
Pin 3: ground
"

Thanks again Tuan! @TuanTran

 

Good news & Bad news. Good news is the footwell, and door wiring seems correct. Bad news I took apart the upper console (don't recommend, broke mine a bit lol, not visible at least...its tighter than a ?!?); and neither the upper console or the harness seem the same as described at all; maybe I am just not understanding/missing something, so I guess no top lights for now; I didn't even know those changed tbh. In the meantime I have ordered a couple of the RGB modules, so I can test to make sure they work before ordering the rest. I also want to see if we can get away with just buying BM5Z-13C626-D for all the doors, that will save about 100$ in doing this...The modules will be here next Friday and will let everyone know how it goes.

Neither of these match the wiring colors described in either the 2016/2018 Focus RS wiring Diagrams...hmmmmmmmmmmm.....

 

Some bad news for 2016s for sure at least. None of the settings available on my BCM enable (I got the RGB selection screen enabled also which I can see) the RGB ambient w/o an overhead console module (at least I got this far). Perhaps if I can directly take the coding from newer model directly it could work, but as is, its unlikely this will work w/o the OH console. This leads me to believe it can't even work as the video above on 2016s. Hopefully at least and maybe 17/18s or the BCM update will expose this option 5. 2016s as is would be more likely restricted to the older method with a push button and console...my 2016 only has 4 options under forscan and not the 5th for BCM based controls. Perhaps the my17/18 or even updated 2016 BCMs might suffice (TTs was on a newer APIM as well). My odd problem is I need to figure out why my wiring doesn't match any diagrams, before I dive into getting an overhead console. Oddly my overhead console wiring doesn't match RS 2016/18 or focus standard (obviously) wiring diagrams (it doesn't seem there are some slight differences in each diagram book also), anyone have the RS 2017 wiring diagram book? I also wanted to see if we could get away with just buying BM5Z-13C626-D....I don't think so after this. Each rgb module has a unique identifier which may be required. The main chip on the RGB is a or close to a Datasheet - STM8AF6213/13A STM8AF6223/23A STM8AF6226 - Automotive 8-bit MCU, with up to 8-Kbyte Flash memory, data EEPROM, 10-bit ADC, timers, LIN, SPI, I²C, 3 to 5.5 V and from what I understand this MCU handles the lin decoding/communication.

 

anyone have the RS 2017 wiring diagram book?

What section do you need?

That seems to solve it though! Somehow we got some undocumented (or incorrectly documented) single LED ambient lighting.
I agree it would probably be best/cheapest to run the 3rd wire to a separate controller and change colour without the screen. Or if you don't care about changing colour just make a new LED module with your desired colour which is I guess what SeniorGeek did

 

I just noticed another difference, it could likely be the updated APIM Mr Tran used that enable this slight difference also perhaps...his RGB selection is spheres, when I enable it I get squares that don't have brightness adjustments. It likely will be cheapest to piggyback off the current system and add our own RGB controlled via phone/WLED. Here are the two different modules

TOP is default RS, bottom is 626-D
Some good news, unless there are 2x GN-VT wires, I do think I see 1 VT-GN and 1 GN-VT. The wiring harness leaving the 2280C BCM seems to follow the 2018 wiring diagram at least. I just have to keep tracing the wires until I find the deviation heading up to the above center.

 

Why was it so easy on the Ford CMax to have this....

 

I think we might be flying blind here, does not appear to be properly documented for RS

C9046 might be what we are trying to find but it does not exist in the book.
Have you been able to find C929 or C931?
I think the connector in the 2nd photo might be C912?

 

I was planning on making a write-up on this once I got around to wiring the rear doors, but I was able to rewire the headliner, use the leds from a Titanium and a control module from an ST3 to get the multicolor ambient lighting in my 2017 RS. I will come back and post some photos later on.