electronic chaser circuit

marshyrob : Hi.

Short answer to your question - I don't know!! My principal interest is MQB platform cars - this car is built on a MEB platform, very different!!

Longer answer (suggestion really): If this was my car - I would start with the wiring diagram (everything, ALWAYS starts with the WD)! 

 Look at how Audi has designed the tail-light options on this model car - understand whether the individual lamps on the fittings are separately wired back to the module, or whether the tail-lights use a single wire (called "LIN") to communicate lamp signal information from the module. 

 The former arrangement is easier because dynamic turn-signal fittings generally require a separate fixed power-supply to energize the LED chaser circuits. So, look for a wire that terminates on a "T30" voltage source (maybe a fuse, or coupling-point).

If LIN communication protocol is used - stuff gets more complex because the way that the individual lamps operate on the tail-lights is determined by LIN software instructions

The other possibility (I guess) is the information on the vehicle-data-sticker for the car (see example below).

The PR Codes detail the build options that were installed on this car at the factory. A Google search will give you access to the decoding information for the numbers on the data-sticker -so you should be able to identify which version tail-lights were fitted to the car. You can then line-up the PR Code with the electrical arrangement for the tail-lights on the wiring diagram

Don

You can find wiring diagrams for American Audi's HERE (NAR models) and for Rest-of- world Audi's HERE (RoW models)

Don

Yes, the ERWIN sites are a pay-for-service thing - but you can buy a short-term subscription for not much cost. 

If you were expecting to access wiring diagrams for a late model VAG car like this MY23 Audi for free - then I respectfully suggest that your expectations might be more than a tad exaggerated (no offense intended)!!

If you do use the ERWIN site - here's a few hints: