RNS-D change GPS antenna but still no satellites

[andycaca]

hello people
i've just changed the boot mounted GPS receiver with one that i bought from A8 parts. unfortunately it doesnt work, the head unit is still showing 0 satellites located out of 30.

i have made the connection in the boot lid, and also pulled out the head unit slightly and checked the connection there.

am i missing something? this is all assuming the GPS receiver is working

thanks
andy