All lights were working.

Suddenly every lights are not working now.
Dashboard, front, and rear turn signals are not working
Brake lights are not working too.
I forgot to check if reverse lights are working.
Aftermarket headlights are working.

And Check gauge light comes on and off sometimes.

XJ starts right up.

I'm not sure where to start to figure out.
So can anybody help me please?

 

I'd say start with fuses/relays before you go ripping any wiring out. Not sure if you have any other aftermarket lights or how the headlights are wired but if they weren't wired correctly or tied into existing light circuits it could be frying the fuses. Haven't seen all lights go out at once but stranger things have happened. Just my two cents. Good luck.

 

Any recent work done on your XJ?

 

thanks i'll start from the fuses and relay.
Yeah, it's really strange that every lights were out at once

 

I bought the car a week ago, and i didn,t do anything.
I found mouse nest in the car and i worried if they eat any wire.