Wireless CarPlay SmartBox C GLC

CarPlay Smartbox Proxy Kit for Mercedes C W205 & GLC X253

W205 has a narrow and widescreen display, for the audio source quality we have several options as below:
1. OBD2 NTG5.2 AUX IN activator or use Mercedes Vediamo/Monaco engineering system to activate this function.
2. use USB AUX Dongle or FM channel switch to aux quality.