No GPS Signal

[BearClaw]

After some hard off roading up in Maine, the onboard navigation is not getting a GPS signal (at best it is intermittent). Shows the NO GPS icon on screen and is placing me in areas that I am not; like the middle of Atlantic ocean.
Ford tried resetting the Nav back to factory settings and manually telling it where I am but that did not solve issue. They referenced that "4 pin"(sic) might be shot but I am thinking I have a loose connection due to hard jumping and occasional intermittent signal.
Anyone know where that connection might be?

 

[The Car Stereo Company]

it plugs in on the backside of the radio. there are also 2 data wires that control the gps antenna in the 54 pin harness

 

[BearClaw]

Can I access through small shelf above radio or do I need to remove dash to get to back of radio? Also any hint as to which connector?

 

[The Car Stereo Company]

you have to pull the dash out. its the only big connector that plugs into the screen.

 

[BearClaw]

Gracias!