The HB units will not show map views, GPS speed, the NAV tab, the Chart tab, nor GPS fix when the unit is not recognizing the GPS antenna ...

Cycle thru the Views tab in the Main Menu System ... and make "Visible"'the "Accessory test" view ...

Then exit out of the Main Menu System and cycle thru the view button until you see the "Accessory Test" view ...

If it shows the GPS antenna as "Unconnected" ... Wiggle the cable like wannabe mentioned and see if you can get the unit to pick up the GPS antenna ...

If this doesn't work ... Dis-assemble the cable collector, remove the cables and plug them directly into the head unit and test again ...

If the GPS still shows "Unconnected" in the "Accessory Test" view ... Cross test another GPS antenna on your unit or your unit on another GPS antenna ...

If you don't have access to another GPS antenna ... Call HB ... 1-800-633-1468

Rickie