Does your APIM show any GPS lock issues? Map spinning is usually either a loss of GPS lock or a conflict with the GPSM (Sync 2) module still active in the system.
I have not ever messed with the sat cables, all of mine never needed replacing. I know that the rooftop antenna will work much better than the little puck type things in the dash, so going that way may fix the issue. @bill32399 might be able to help with this better than I.
See this:
SiriusXM Logos on 3.4? - Ford / Help & Support - CyanLabs Official Community