Couldn't find a good guide anywhere to retrofit ambient lighting in door cards so thought id make one.
Parts are all available from dealer and it works out about £110 for the 4 doors.
This retrofit can be done without vcds, and so no coding is required. Brightness is controlled via knob on light switch panel.
Parts needed -
Driver door: 4G0919174A, 4G0947355C, 8W0971832
Passenger door: 4G0919173A, 4G0947355B, 8W0971832
Rear right door: 4G0919178A, 4G0947355C, 8W0971832
Rear left door: 4G0919177A, 4G0947355B, 8W0971832
For the wiring you will need 2x 000979009E, they come in packs of 5.
You will also need T25 screwdriver, trim tools, flathead screwdriver, heat shrink tubing, insulating tape, something sharp to cut wires.
Optional things would be cloth tape to give oem look and stop wires from rattling inside door and would definitely recommend some spare door clips as some tend to break when taking door card off.
Attachment 33759
Start by prying off trim and speaker cover to reveal 2 screws, final screw is located under handle.
Attachment 33760Attachment 33761
Once screws are removed there is a tab you need to press, as shown in the picture, which undoes a clip inside the door. Then use a trim tool to pry door card off. Some clips can be really reluctant to come off, best thing to do is use trim tool to pry door card off enough to get your fingers under and pull. You will need to roll down the window, then push up to slide the door card off.
Attachment 33762Attachment 33763
Once door card is removed, unplug connector from door module and disconnect wire from door handle. The door card should now come off completely.
Attachment 33764Attachment 33765
There is a small gap that you slide the end of the light bar through, then push each of the clips into their slots, you should not be able to see the light bar at all when clipped in, if you can you haven't pushed it in enough.
Attachment 33766Attachment 33767
Now to the wiring: You will need 2 wires for each door. Mark one wire with tape at each end, so you can identify this as your ground wire. Strip one end of each wire and twist the end.
Plug the other end of each wire into the connector. The ground wire (with the tape on) goes into plug 1 on the connector. Once this is done you can tape up with cloth tape.
Attachment 33768
You are going to tap into the wires for the door handle led so remove the connector, then remove wires from connector. To remove the wires the top of the connector slides off, then use the flatheaded screwdriver to release wire from connector. Strip part of the cable to reveal wire, use the screwdriver to part the wires in the middle. One wire will be solid brown, this is the wire you will put your ground wire through.
Attachment 33769Attachment 33770
Slide your wire through and twist round. Do the same with live wire. Then slide heat shrink tubing over and heat up to seal cable. Put wires back into connector, brown wire goes to plug 1 on connector. then connect back up to door handle led.
Attachment 33771Attachment 33772
Now plug the other end of your wiring to the led and then attach your led to the light bar. There is a small clip on led that goes into a slot and secures it to the door card.
Connect everything back up, take care to make sure wire for door handle is put back properly.
Attachment 33773Attachment 33774
Each door will take about 30mins, takes very little effort, I am a complete novice at wiring and found this pretty easy.
I will be doing ambient lights in centre console soon so will do a guide for that too.
