Hi
Had a look at the reception issues and found a few problems....
Firstly the amplifier is missing at the rear! Just the power and ground wiring hanging around..
View attachment 32424
So next I tested the coaxial cable for any short from the centre core to the outside screen cabling
as shown in the photo a good cable will show O/L O/C or open circuit as none of the screen cable
should touch the centre core of the cable.
View attachment 32425
So all good there as kindly mentioned earlier by fellow Z ers.
Next to test the centre core at the radio head to rear point of ariel.
The reading shows O/L Open circuit so here lies a broken centre core of the coax cable.
View attachment 32428
So no amp and faulty coax cable no go lol.
I priced the items from bmw and around 120+vat with a new antenna !
So I am going to try a blaupunkt amplified screen ariel which are about 50mm circle on the screen
so should look ok and also amplifier built in.
It won't land until late next week so I will post some pics and see how it performs.
Cost is 25 quid a lot better than 120....