W204 gps problem

[Chris Edge]

Good morning all. I hope someone can help.
I've been having a GPS issue on my W204 Harman Kardon/command sat nav.
Reading through all the previous post's (driving in 20 -50 miles from where I actually am and also picking up 10 sats but no location)and having a scan of fault codes(gps cable gnd fault) it would appear that its a cable issue.
I'm looking to get a new non oem antenna but can't find any with the fakra type b connector (double). Will a converter from single to double do the same?
Also what route does the cable take to the existing antenna, is it in the shark fin?
Can anyone please help.
Many thanks

 

[Srdl]

The guys at Comand Online are the best people to ask. In fact, they are not that far away from you near J3 of the M3 if you fancy a morning out.