The Wiz is an effective 2-way radio voice-activated left front speaker switch and left front stereo output mute device that allows seamless and fully automatic interaction between the vehicle stereo and a scanner or other radio receiving device equipped with a mono 1/8” (3.5mm) speaker output jack such as on a GPS, CB, FRS, GMRS, VHF, UHF, Ham Radio or Radar Detector.

Wiring Diagram