Thank you for viewing. Genuine Carrozzeria product Speaker line input code (L/R) set I purchased it but did not use it, and have stored it for a long time. There are some small scratches due to storage. I have not confirmed the operation. This is a cable that takes audio output from the speaker lines when there is no subwoofer output terminal on the back of the deck or navigation system. Please check the details with a specialist shop where you plan to have it installed. Carrozzeria Speaker line RCA Subwoofer