Single port insert with labeled spring loaded terminals for inserting up to (20 gauge wire, Color: White. For use with Calrad IR receiver, emitter distribution products and mono or stereo audio applications. Wiring for audio (R=Righ channel), (L=Left channel), (G=Ground Wiring for IR Receivers (S=Signal), (+=+12Vdc), (- =Negative\Ground). Keystone Insert