It's the blue-black wire. You can see from the connector it's #2. When you open up the tail light assembly you can follow the traces to the bulb. The bulb type is marked at the bulb location.

For more information on the wiring diagrams you can download the Workshop Manual from the KB -

FAQ - Audi TT (8J) Workshop Manuals & Self Study Programs
https://www.ttforum.co.uk/forum/viewtop ... &t=1833829

If you're doing the tail light ground/earth repair, this post may be useful -

Rear light unit fault - non OEM repair
https://www.ttforum.co.uk/forum/viewtop ... 9&t=264435

 

It's the blue-black wire. You can see from the connector it's #2. When you open up the tail light assembly you can follow the traces to the bulb. The bulb type is marked at the bulb location.

Yes, thanx. I have trusted on you

What I wanna do, find this color (I hope it exists) in the main loom which runs over the luggage rack and slice it for my reverse camera as +12V.
I have checked, there is no space to lead the cable in from the rear lamp, and I dont wanna take half of the side-panel apart .

 

You can't pull power off of the rear light to power your camera because the TT uses PWM (Pulse Width Modulation).

You can use it for a trigger when linked to an RNS-E, but not power.

There's a good circuit diagram in this post for the RNS-E you might be able to work with -

How To - Audi TT Mk2 Reverse Camera Installation
https://www.ttforum.co.uk/forum/viewtop ... 9&t=981945

 

I think you're out of luck as I'm pretty sure the light wires run down each side of the boot, and aren't anywhere accessible without removing the boot side panels like you say. However, they are quite easy to remove

 

You can't pull power off of the rear light to power your camera because the TT uses PWM (Pulse Width Modulation).

You can use it for a trigger when linked to an RNS-E, but not power.

There's a good circuit diagram in this post for the RNS-E you might be able to work with -

How To - Audi TT Mk2 Reverse Camera Installation
https://www.ttforum.co.uk/forum/viewtop ... 9&t=981945

Are you sure of this? As I have seen, this is a simple halogen bulb with 12V. Maybe I am wrong.
This is what I found there:

Since I dont have RNS-E anymore (replaced by Android head unit one), I can bring the power from the power connector as well from the headunit. (the trigger comes from the CANbus adapter, only the 12V what I need)
But I dont see, which pin is this exactly.

 

I think you're out of luck as I'm pretty sure the light wires run down each side of the boot, and aren't anywhere accessible without removing the boot side panels like you say. However, they are quite easy to remove

No, I think, it runs close to the side, under the plastic holders. This is the big loom.

 

Are you sure of this? As I have seen, this is a simple halogen bulb with 12V. Maybe I am wrong.

Only one way to find out, why not try to tap said wire with a scotch connector or a posi-lock tap that doesn't cut the wire.

 

Are you sure of this? As I have seen, this is a simple halogen bulb with 12V. Maybe I am wrong.

Only one way to find out, why not try to tap said wire with a scotch connector or a posi-lock tap that doesn't cut the wire.

Yes, I have few of them, I will try. But I am a scared about it, what is the PWM?

 

PWM is Pulse Width Modulation -

How PWM control works in car electronic systems

 

-

 

And do you think, does it affect my camera? It gets the 12V probably in a frequency.

 

@SwissJetPilot

https://www.ttforum.co.uk/forum/viewtop ... 5#p9455205