On trying to startup this evening, I lost all electrics for about 30 seconds.

At first notch on ignition normally you hear the fuel pump pressurise briefly before you start the engine. This evening, it just clicked then all the electrics then went off. Dash board displays (mileage, outside temperature, clock etc) and radio all blank, start motor didn't kick in. Quiet clicking noise behind dash. Removed key from ignition. All displays remained blank.

Reinserted key and left at 1st notch on ignition (sorry, don't know what else to call it!) 30 seconds later, hear fuel pump pressurise, all the needles on the dash (speed, revs, temp, fuel) shake up and down for 3 seconds. Clock and Radio reset everything back to normal.

Can anyone explain what might have happened, and should I be worried?

Regards

Phil