Here you go @Lord_Moppy. My set-up for talking to the J519 module off the car.

 

Hacked-about KKL cable with K-line (blue wire), 0V and 12V (red) connections broken out.

 

 

Main permanent 12V (red) and earth (black) connections:

 

 

18-way brown connector

Ignition 12V (pin 12)

K-line (pin 1)

Permanent 12V (pin 5)

Earth (pin 8)

 

And everything on

 

The pin 5 and pin 8 connections on the 18-way aren't essential for VCDS to talk to the module, but having them hooked up removes some errors to do with battery voltage.

 

To connect other modules in, power the individual module with whatever supplies it requires, and hook up the relevant CAN connections to either XS2 (convenience CAN bus) and/or XS6 (drive CAN).  Haven't tried that yet.

Edited 20 March, 20215 yr by Wino

When I bought my car [second hand admittedly] it [already] had lit needles.

I wanted to have the whole dashboard illuminated via ignition [not just the needles]; ideally via software but I couldn't find this in VCDS so I had to resort to connecting a couple of wires via a diode. Wires were determined by using a multimeter.

@Wino

Many thanks for your help!!! Tested it yesterday and it worked fine. 

 

Do you have more information on how I can connect to an instrument cluster? I know connections to power up the cluster, but I don't know which cables are needed for a data connection.

I'll try to find time to have a play around and see what the minimum connectivity requirement is.

 

It might just be this, J519 (Central Electrics) top, Instruments bottom. Those are the drive CAN connections.  There's also a 'wake up' connection, pin 11 of the same connector at J519 to pin 24 of the instruments connector, but I don't know what is waking up what or whether it needs to be connected to get the two modules communicating.  

 

 

@Wino

Many thanks for your help! It worked perfect... 

Hi, I'm writing from Italy. yesterday I connected everything as read here for a tacho polo 9n3 (same platform and electronics) everything works, I read the pin and changed the mileage with vag commander, I switch to the vcds lite 1.2 (cracked) and trying to change the immo of a tacho remedied in the wreckage for testing but I receive an error when I change the immo pin in channel 50. by any chance is it not possible to encode tacho on the bench or should something else be added in addition to the bmc and tacho? Thank you

Cracked software won't do it, buy a licence dude!

1 hour ago, sepulchrave said:

Il software crackato non funziona, compra una licenza amico!

I've a register one version, and i can coding the immobilizer chip with no problem ad it work fine, but i can't swap the cluster pin on the try cluster.

 

If i do the process in the cluster on my car i can do the correct proces and on the square i read the immo id 

Edit:

I disconnected my ecu and my tacho and mounted it on the bench, same thing as the test one: malfunction.

 

So I reattached my ecu in the car and the test tacho..the cable works and the swap is possible; so to do a swap on the bench you need to add something else: if anyone has any info they are welcome 💪🏻

 

Second question: has anyone managed to get the tacho lights on the bench to turn on? how did you do?

 

Instrument cluster lighting is controlled by CAN messaging from either the J519 module, or directly from the dimmer control switch, as far as I remember.

I suspect you'd need that control thumb-wheel thing wired in however it is in the car.

 

I know nothing about changing odometer readings.

11 minutes ago, Breezy_Pete said:

Instrument cluster lighting is controlled by CAN messaging from either the J519 module, or directly from the dimmer control switch, as far as I remember.

I suspect you'd need that control thumb-wheel thing wired in however it is in the car.

 

I know nothing about changing odometer readings.

so doing a search I found another old post and to have the lighting you just need to add a pin to the +12v from j519.

 

XS1/2 -----> +12V 

 

 

I don't know if it's relevant to the topic, I have a fabia/roomster speedometer from which I have to read the eeprom to match it to my car, but the classic vag commander doesn't seem to work.

 

Do you know by any chance how to read the eeprom to extract the pin?

 

Thanks