XTRONS Car ISO Harness Adapter Connector Cable with High to Low Impedance Converter, Android Auto Car Stereo Radio Player compatible with Au-di A3 A4

I recently used the XTRONS Car ISO Harness Adapter Connector Cable for my car audio installation, and I couldn’t be more satisfied with my purchase! Here’s why I think this product deserves a top rating: Pros: Perfect Fit: The connector fits seamlessly with both my car's wiring and the new head unit. No splicing or complicated modifications were necessary—just plug and play! Quality Construction: The cables feel durable and well-made. I appreciate the attention to detail, ensuring that they can withstand wear and tear over time. Clear Instructions: The included instructions were straightforward and easy to follow, making the installation process quick and hassle-free. Versatile Compatibility: It works well with a variety of car models, which is a huge plus if you plan to switch head units in the future. Cons: Limited Color Coding: While the wiring is generally intuitive, a few more color-coded labels would have made it even easier for first-time installers. Overall, the XTRONS Car ISO Harness Adapter Connector Cable is an excellent investment for anyone looking to upgrade their car audio system. It made my installation a breeze and saved me a trip to the shop. Highly recommended!

Works perfectly on 2011 Audi S3.

I just changed the unit of my Audi TT MK2 with a chinese one. There was a buzzing noise and the bass seemed to be off. Also the car has a Bose system. Checked the amplifier but still did not work properly. After checking with a shop specialised in car audio they advised me to buy a way more expensive unit. I just went and tried this adapter. Totally worth it. The noise is totally gone, the audio has improved a lot and also the bass is much better. For the price this is totally worth it. I'm not sure about the normal systems but i'm sure if you have Bose this will work. Also, the instalation was very simple. Just plug it in and see if it works.

Worked as described. Connects the head into to the speaker controls in the boot. I don’t have track skip fwd back buttons working on the steering but volume works. I feel this should have been included on a vehicle specific stereo.

Great piece of kit, whether you have the Bose system on your TT or not, this is well worth installing as it also filters out background static noise caused by wires behind the dash, a very common issue on Audi TT aftermarket headunit installs.

I bought this for audi a3 sportback 09 still does not make rear speakers work

Fitted an Aliexpress head unit to my MK2 TT with Bose speakers, like most people that do this only had the front speakers working and no subwoofer. Simply plugged this between the new unit's harness and the original one and all working perfectly, literally just 2 plugs and sorted, everything on the adapter left as it is, it was all already plugged in ready. Took literally 30 seconds to fix a problem I'd spent hours trying to fix.

Bought a cheap HU from ali express for mk2 TT, everything worked perfectly except the sound was quiet and only in the front. This just plugs right in and the full sound is back front and rear. If you're having the same issue this is 100% what you need. Small point, I had to plug the Ls in Rs and the Front in the rear to make it right.