dash board lights and tail lights are not working

Try fresh bulbs in the tail lights.

If the car has any aftermarket accessories like audio systems, remote starter, alarms, etc., check the wiring for those accessories.

Check the tail light ground wires and ground points.

Check for power at the tail light sockets.

Check where the wiring is attached to the hinge to make sure it is not pinched, chafed, or otherwise damaged.

You will need a wiring diagram to check the combination switch.

Trailer hitch wiring, too. I had a Hoppy (brand) flasher unit go south on me, producing symptoms as strange as the ones the OP is describing.

A Hoppy flasher and aftermarket hitch wiring would count as an aftermarket accessory ;-)

Aside from what Ray suggested, there is also a connector up under the dash that comes a bit loose in some cars, or at least one or two connectors. Same thing happened in my Mom's Camry, and it was a REAL PITA to get in there!

Just a diagnostic thought: do they actually go off, or very dim? If dim, it could be too high a resistance somewhere in the power feed wiring (connectors, switches &c). This translates into any number of deterioration causes. Conversely, when on are they at normal brightness? Less than normal is consistent with the high resistance theory.

Thanks for your reply. The dash boardlight, sterio lights, clutch lights go totally off. But when they are ON they are bright as normal. During driving sometimes using the left and right indicator....makes the dash board light come back again.

I feel the switch might be problamatic. But front headlights work fine.