The remote wire of a Pioneer car stereo unit is used to connect the stereo unit to an amplifier. Amplifiers are commonly added to car audio systems to provide extra power for speakers and subwoofers. Remote wires are included in amplifier wiring kits or can be purchased individually. Installing a remote wire is a simple task that should take less than 30 minutes.
Strip off half an inch of the rubber sheath from one end of the remote wire using the wire strippers. Attach this end to the remote wire terminal on your amplifier. Most amplifiers have a screw that holds the wire in place.
Run the remote wire from the amplifier to the Pioneer car stereo unit. In almost all cases, amplifiers are installed in the boot of a car. The wire must be snaked through to the passenger compartment of the car and should be installed under the door sill and carpet. While every car is different, it is usually possible to pull off the door sill and run the wire under.
Cut the remote wire to the proper length for your car and strip off a half inch of sheath from the end. Connect this end to the wiring harness of the stereo unit by twisting together the wire coming from the wiring harness and the remote wire. Cover the wire with electrical tape. The wiring harness is located behind the stereo unit. While every car is different, the wiring harness can be accessed by unscrewing part of the dashboard of the car and pulling out the stereo unit.