Solo3 main internal wire that fixes issues such no power to no sound on one side of the headphones. Looking to buy a brand new replacement black 5 core internal wire with the wire clip for your Solo3 headphones to replace your nonworking headphones? FixABeat has an affordable and quality Beats Solo 3.0 generation black internal wire 5 core replacement that will get your headphones back to normal. The price of the Solo 3rd gen black internal wire 5 core is much more cost effective than going out and buying a new set of headphones. This Solo3 5 core internal wire that connects to the Bluetooth board and is soldered onto the audio jack.