Most Fiber Optic Loop, Pack of 2 Universal Optical Female & Male Adapter Connector Loop Bypass Cable for Radio and Audio Mercedes BMW VW Audi Porsche SOS FIX(13.5cm/5.3in)

Works a treat

as described

If you are buying this, odds on you have a problem with your in car entertainment system. By plugging this onto the optical connector to the radio, it showed my Audi A4 5F head unit was working. Audi dealer wanted £5k for a new unit i didn't need. Recommended

If you have a newer-ish car and audio / sat-nav / Bluetooth problems - this is for you!Very helpful, I've been having issues with audio in my car.Disconnected each component of MOST network and found that my bluetooth module is faulty.Keept connector to loop the signal (without bluetooth module) and no more issues!

Was cheap , and it worked

Poorly made. Tried on 2 applications and did not work.

Came with female & male ends, just plug in, sorted my problem, now, ecu not recognising faulty bluetooth module.

Did the job it was purchased for, working well.