All Dash Lights Are Coming On??

Can abyone enlighten to why when im driving along, all of a sudden all the dash lights will come on and the guages go to zero??
If i snack the top of dash they sometimes go out but not for long.
The car went in for a head gasket replacement and heater o rings etc then comes out with this defect????

Heater O ring replacement will have necessitated work in the dashboard area, which will have dislodged the multi-pin plug which feeds the instrument cluster.

If you can, take it back to the guys who carried out the recent repairs.

Good luck!

hi thanks for you responce, will i be able to carry out the work myself if its a case of taking the dash apart i can do this im sure. I bought a new fuse box thinking that they may have poured water in there when doing the head gasket.
Or will this be a case of needing a new instrument panel??
Kind regards

If you're at all handy with a screw driver, you should be able to remove the instrument cluster and check out the connectors.

Try removing the panel under the steering wheel first and see if anything is amiss.

Good luck.