14 hours ago, jesse_s93 said:

I also used your guide, thanks @Giannis20!!

 

I have two questions:

- did you change the fuse? I know that the standard fuse is 7.5A. 

- How did you connect the terminals to the wires correctly? I tried clamping them, but it does not seem sufficient. It's ok, but if you pull the wire, you pull the wire from the terminal.

 

Thanks!

Hello, 

i didn't change the fuse. I don't think it's a good idea somebody change the fuse.

 

For crimping I have a special  tool, something like that. The connection with the terminal is fine using this tool.

 

 

If you don't have such a tool, you can try to solder the wire with the terminal pin just to make sure the connection is secure. 

Edited 23 July, 20241 yr by Giannis20

Hi Giannis20,

 

I would also like to upgrade the rear USB ports. However, here in Germany, there's virtually nothing to be found on this topic. Your guide is the best I have seen and also the only one. Unfortunately, despite your instructions, I have no idea how to make such a cable myself. Would it be possible for you to make such a cable for me and send it to me? I would, of course, cover all the costs.

19 hours ago, Julian19901707 said:

Hi Giannis20,

 

I would also like to upgrade the rear USB ports. However, here in Germany, there's virtually nothing to be found on this topic. Your guide is the best I have seen and also the only one. Unfortunately, despite your instructions, I have no idea how to make such a cable myself. Would it be possible for you to make such a cable for me and send it to me? I would, of course, cover all the costs.

 

Sorry my friend, I can't do it. Maybe you should find a friend near you who can make the wiring for you.

 

 

I have buttons in the back for temperature setting. Is it possible to take the electricity from there as well?

On 14/02/2024 at 15:39, Giannis20 said:

 

Hi, 

no, there is no chance of that happening.

The plug I use to connect it is for power only, not data. Please see the following picture.

 

Hi,

 

i have a question about the pinout. Pin 1 = +12v, Pin 2 = ground, Pin 4 = +5v but for what is Pin 3?

Hi @blackhawk77

 

I think pin 3 is for the white LED around the usb C ports, to see them in the dark. You don't need to get pin 4 to the back, that is the data pin. 

 

 

I will replace my front USB-A to the 2 USB-C version. Ive bougth it from Aliexpress with wires but i have no Pinout, thats the reason  Its for my Touran 5T but the red connector is the same like here. 

The USB Datawire is another cable. Pin 4 in the flow diagram is +5v

On 15/02/2024 at 17:27, Felix2021 said:

For front it's 5NA035700. Just ordered one and will check how i can fit it to O4.

Actually there are two versions of standard port. 5NA035736 and 5NA035736A. By the looks of it, newer part number with A has same (or similar) casing as 45W one, so maybe it's possible to już swap PCB between the cases. One without A looks a bit different, and it might be harder, but i'll check. My car is from march 2021, so i assume i will have one without A.

As for rear ports, i would have to check in ETKA, a just saw there are options, but haven't really checked for part numbers.

Hi @Felix2021 - Were you able to install the 45W USB C Module? 

I made it 😎

 

100% works

On 11/02/2024 at 12:33, Giannis20 said:

Well, i managed to retrofit rear usb ports.

 

As i mentioned i bought the plastic trim with the USBs holes. (5E3863618 (9B9)

The USB module with 2 USBs - C ports is the 3G5035954A

An cheap sourch is from a Poland site named SkodaParts   (https://www.skoda-parts.com/spare-part/3g5035954a-usb-c-connector-skoda-38659.html)

I did the wiring. I bought some plugs for this purpose. The black to connect the wiring to the car's (needs a little modification), the red to connect the existing contact of the front seats and the brown for the rear seats USB.

 

 

 

The black plug (female) needs a bit of cutting to get the male red plug in. Please see the photo below:

 

And this is the wiring

 

Each plug has 4 pins. Connect 1 to 1, 2 to 2 and 3 to 3 to all plugs.
4 only needs to be connected from the black female to the red male. The new USBs that we will put back do not need to be connected to No.4.

This is the schematic

 

This is the result of the preparation.

Ciao @Giannis20

I also managed to connect the double usb-c charging ports

I used a different wiring loom for this project i used the power from my 12volt socket plug in my luggage compartment and pulled it to the front and it works perfectly but i dont have my LED lights working. Right now only both charging ports are working i have connected the small plug to the double charger only have 2 wires red and black wire connected i think i need a third wire maby you can you tell me what i need to make de LED work at night time.

1 minute ago, Italianooo said:

Ciao @Giannis20

I also managed to connect the double usb-c charging ports

I used a different wiring loom for this project i used the power from my 12volt socket plug in my luggage compartment and pulled it to the front and it works perfectly but i dont have my LED lights working. Right now only both charging ports are working i have connected the small plug to the double charger only have 2 wires red and black wire connected i think i need a third wire maby you can you tell me what i need to make de LED work at night time.

6 hours ago, Italianooo said:

Ciao @Giannis20

I also managed to connect the double usb-c charging ports

I used a different wiring loom for this project i used the power from my 12volt socket plug in my luggage compartment and pulled it to the front and it works perfectly but i dont have my LED lights working. Right now only both charging ports are working i have connected the small plug to the double charger only have 2 wires red and black wire connected i think i need a third wire maby you can you tell me what i need to make de LED work at night time.

The blue one.. actually the light blue

5 hours ago, manuelin said:

The blue one.. actually the light blue

@manuelin

Can you explain where i can find this light blue wire risponsable to power my LED at night time. Do you mean a light blue wire wich i can find in the front Connector from my double (front) usb c?

The front usb connector has 4 wires it looks like in this picture it has 2 blue wires

Hi,

for ambient light you need to use the Pin3 from the original connector, it's the Blue/Gray cable.

Edited 14 March, 20251 yr by Giannis20

8 minutes ago, Giannis20 said:

Hi,

for ambient light you need to use the Pin3 from the original connector, it's the Blue/Gray cable.

@Giannis20

Thank you for your reply so if i understand it right in the front usb connector on pin3 i will find a blue/gray cable i need to tap in to and bring it back to my rear usb connector on pin 3 for the lights to work

20 hours ago, Italianooo said:

@Giannis20

Thank you for your reply so if i understand it right in the front usb connector on pin3 i will find a blue/gray cable i need to tap in to and bring it back to my rear usb connector on pin 3 for the lights to work

Yes, that's right.

On 15/03/2025 at 05:01, Giannis20 said:

Yes, that's right.

@Giannis20

Thankyou very much for your help ambient light works now! :)

@Giannis20 @Felix2021

I have been looking for this thread a long, long time. Happy I found it, kudos to you @Giannis20

In the meantime I did a research which I think may bring some more worthy details. Currently I drive a company car Skoda Superb IV 2024 (code NZ) which is a base model missing, among few things, a rear USB-C section. I dig a lot in wiring diagrams of other modern cars of VAG group and here is what I found:

It seems VAG completely dropped USB-hub solution, it happened depending on the car model in years 2019-2022, so any wiring diagrams dated before are with this regard (usb wiring) obsolete now.

Currently, in all modern VAG cars (model years 2023+) there are two USB (namely USB-C) solutions, that have been gradually implemented in all VAG car models in recent years. I present them in accordance to PR codes:

(1) U9E: External, USB type C data socket(s) and charging socket(s) with increased charging performance

In this solution there are two double usb-c sockets capable 45W delivery (fast charging):

front - double usb-c VAG part 5NA 035 700

rear - double usb-c VAG part 2G6 035 718

and a front mirror socket (I guess up to 15W) VAG 3V0 035 954 or alternatively 1J0

937 510

This solution is offered in higher segment cars or sometimes as an option (higher trim), for instance T-Cross, Octavia, Superb but please note that VAG uses strong market segmentation. This means endless matrix of countries, car brands, model years and trim levels.

(2) U9C: External, USB type C data socket(s) and charging socket(s)

In this solution there are two double standard usb-c sockets offering slow charging.

front - double usb-c VAG part 5NA 035 736

rear - double usb-c VAG part 2G6 035 954

This solution is offered is lower segment cars (e.g. VW Polo MY 2024). Upon my research no front mirror is offered in this segment.

(3) U9B: External, USB type C, only data socket(s) or U9G External, USB type C data socket(s) with increased charging performance

There is also a mixed solution (see my comment above about market segmentation) which usually, I would say mostly offers only one double, slow-charging usb-c socket in front VAG part 5NA 035 736. This is for instance a case for Octavia Superb IV (2024) Essence or only one front double usb-c fast 45W charging socket.

There is only one front usb-c VAG part 5NA 035 736. No rear or front mirror sockets. Further, there is no harness either to a mirror or to rear part of the car (if you hope to find harness ready to plug-and-play, don't bother, Volkswagen saves every penny).

IMPORTANT - WIRING DIFFERENCES

Please check this carefully own you own, but I found that the main difference between solution 1 (fast charging) and 2(standard, slow) is:

Solution 1 - PR code U9E, parts 5NA 035 700 (front) + 5NA 035 718 (rear)

4-pin socket 8K0 973 754

Pin 1 - KL30a - +12V battery (positive)
Pin 2 - VS5V - 5V line

Pin 3 - KL58 - instrument lighting
Pin 4 - GND - ground

Solution 2 PR Code U9C parts 5NA 035 736 + 5NA 035 954

Pin 1 - KL30a - +12V battery (positive)
Pin 2 - GND - ground

Pin 3 - KL58 - instrument lighting
Pin 4 - empty or VS5V (check specific mode wiring diagram).

Note: slow charging solution probably can work without 5V line (pin 4).

Note: based upon wiring diagrams (see attached for Skoda Superb iV) both solutions use same size positive wires (pin 1) 0,75, but fast charging solution has more ground connections vs to slow charging.

Tip: (any car) if you tired to swap 1:1 slow charging front double usb-c slow charging socket 5NA 035 736 to fast charging 5NA 035 700 note that you probably have to re-pin the connection socket - and swap pin 2 and 4 (fast charging solution has GND on pin 4 while slow charging on pin 2).

All for now. I hope it helps. Disclaimer: any modifications of the original wiring is at your own responsibility. Any information above is only for research purposes and please never treat it as a guide or instruction. You have always to double check or better use professional car workshop.

Skoda Superb IV (NZ) - USB charging sockets solution.pdf

Hi, thank you all for all the info. I just bought all the connectors, cables and USB hub. I really do not know that is this "isolation" arount the cables that I see is also wrapped around original wiring. Can you tell me what I am looking for so I can buy it?

Nevermind. Found out that I need cloth tape for automotive cables :)

Edited 2 June, 20251 yr by Ubermraz

Can someone please make this wiring for me? I don't know how.

Please help.