I currently have a problem with the electrics at the dash assembly of the above model.

The dash lights come on and off when the car goes over a bump Or during operation of the wiper blades after few sweeps the dash lights goes on n off like a chrismas tree???

I believe its a short circuit in the wiring.

Will it cause the whole electrical system to cut-off and stall?
Any rectification method instead of changing the whole assembly that could be costly?
Please advise from any member with such experience.