Sound amplifier circuit, w/o high end sound system & premium sound system for Mercedes-Benz GLS-class X167 (2019-2023)

AUDIO BLU WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 475 GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HERMES CONTROL UNIT HOT W/ BATTERY DISCONNECT SWITCH RELAY ENERGIZED LEFT FRONT ACTIVE ENGINE NOISE COMPENSATION MICROPHONE LEFT FRONT BASS SPEAKER (STANDARD) LEFT REAR ACTIVE ENGINE NOISE COMPENSATION MICROPHONE MIC - MOST MUTE NCA WIRE PNK/BLK WIRE REAR FUSE, RELAY MODULE RED WIRE RIGHT FRONT ACTIVE ENGINE NOISE COMPENSATION MICROPHONE RIGHT FRONT BASS SPEAKER (STANDARD) RIGHT REAR ACTIVE ENGINE NOISE COMPENSATION MICROPHONE SHD SOUND SYSTEM AMPLIFIER CONTROL UNIT VIO WIRE VIO/WHT WIRE WHT WIRE YEL/BLU WIRE

BLK WIRE BLU WIRE BLU/WHT WIRE CENTER REAR BASS SPEAKER (STANDARD) EMOST GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HEAD UNIT LEFT A-PILLAR TWEETER LEFT FRONT MIDRANGE SPEAKER (STANDARD) LEFT REAR MIDRANGE SPEAKER (STANDARD) NCA WIRE PNK/BLK WIRE RIGHT A-PILLAR TWEETER RIGHT FRONT MIDRANGE SPEAKER (STANDARD) RIGHT REAR MIDRANGE SPEAKER (STANDARD) VIO/WHT WIRE YEL/BLU WIRE