Hi Mike
I did this and even when it mutes the music the nav voice is really really quiet. We have scratched our heads for ages over this and cannot work out a way of improving it. Does the BMW Boost headunit amplify the nav voice somehow?
Is there some way to adapt the adaptor so that I can wire up both front speakers so that at least I stand a chance of hearing it?
It's so quiet that if you're on the motorway the noise of the engine drowns it out
Or should I think about mounting its own speaker somewhere - behind the cupholders maybe???
Oh and why doesn't the nav volume control make any difference anymore - is that something to do with it being an aftermarket and not enirely compatible headunit?
Sorry for all the questions...
