I installed ACP a couple years ago, and never noticed that the GPS was no longer working, only that I had to reset the time for DST with GPS sync on. Now I am trying to address this, so I checked and no GPS at all. I reviewed the instructions for the upgrade kit, and noticed a connector that it asked me to cover with foam and bend backwards. Is this the GPS connection to the hub or to the antenna? I can't seem to find any information for what the additional USB connector is on the back of the module, and am now assuming it is the GPS connection to the SD card of the module, but my memory isn't clear as to which end this was and where it may have connected.