John,
The solution to the sound system is to fit a radio in the bulkhead behind the seats. When I did so and wired the radio in to the Kenwood amplifier, the fader adjustment in the radio produced fully adjustable volumes from all four speakers! Clearly the culprit is either the Musicstream unit or(more possibly) the way Morgan installed it!!!! innocent
Just be careful to use a short chassis radio as space is limited. Full Bluetooth is still available for music from the phone through the radio!

Cheers!


Robbie
2021 Plus Four -- Helga
211-WX-1433

"Fettlebodge"--A chief of the PaddyMogs