None of my turn signals lights are working and there is not lights on the dask as well. What could be the problem

Sounds to me like you have one or more fuses that may need to be replaced.

The fuse for the signal lights controls both lights. If the fuse is blown none of the signal lights will work. If the left front/rear signal is not working or is flashing fast suspect a defective bulb

Have you checked all the bulbs (rear as well as front)?

The fast dash turn signal indicator is telling you one of the lamps is faulty. Check all of them and you will most likely find your problem.

The turn signal and brake lights are controlled by the turn signal switch.
You did not mention parking lights so I will assume they work.

Could be a faulty turn signal switch or a wiring problem between the dash and the rear of the van.
Do the hazard flashers work on all four corners ?

Did you try cleaning out any corrossion that might be in the light sockets

first check signal lights fuses if none of signal lights work.if fuse okay,check for burn out bulbs.if all is good turn signal switch is bad or you have loose wire to signal switch if your turn signal lights work some times.

your welcome . feel free to ask me again any questions you may have.

Replace the A/C compressor revolution sensor, bolted to the side of the compressor, unless the connector was inadvertantly left unconnected. This is the only reason the AC light will blink.

I think you both have a defective multifunction switch.