Hi Guys,
I successfully managed to install and set the BT device UHP4(original OPEL-following those guides found on this forum), the system works fine but there is a problem with the audio level perceived by the distant party, it is very low.
When the mic was connected I did connect the black and the white cable (the brown cable has been left disconnected). Could you please get back with some hints about this issue?
Thanks a lot
MSqualo