Product Review
Installation Steps:
Step 1: The installation of this optic fiber decoder is quite easy. Please follow the below steps to install the decode to get sound.
Step 2: MOST BOX power wiring, please connect the black wire to your car's GND wire, yellow B+ wire to your car's B+/BATT wire, red ACC wire to yuor original car's ACC wire.
Step 3: For the white plug and the red plug on the decoder, please simply connect them to the car radio unit RCA cable's FRONT OUT L and REAR OUT R as in the below picture. (AUX IN L to your car's FRONT OUT L,AUX IN R to your car's REAR OUT R).

