Loss of Dash Instruments
 

2006 Mercury Marquis
Started out of the blue about a week ago.
No noise.
No change in power.
ALL Dash Gauges go down to zero just like the key got turned off.

Speedo Tach, Fuel, temp.
All to zero.
And the dash lights ONLY go out.

Ignition switch?
Loose connection under dash in wiring?
PLEASE.