How to Convert Speaker Wires to RCA Plugs | Techwalla Author: Fred Decker Cut a length of speaker wire appropriate for your connection needs. Measure the wire and then cut Strip the insulation from both ends of the wire so that one-half inch of bare wire is exposed.Take one end of the speaker wire and slide the jacket for one of your RCA plugs over the wire. Now Hold the negative lead of the speaker wire against the inside of the RCA's tab. Heat with the See all full list on techwalla How to connect RCA Audio Plug to Speaker Wires? First, you should arrange the necessary tools that will need you to connect RCA Audio plug to speaker wires. Excluding the wires and the plug arrange a stripper, a nose plier, plucker, scissor, soldering machine, solder, safety gloves etc.