temperametal lights in fiat cinquecento 95?

My lights are going funny. When I turn them on, the main bean is on,dash board and back lights are off. I play with the button, get dash board on and back light on but the front lights are dim. Today I started with all the lights on and half way through the dash board went dark so my back lights. This is driving me crazy.Is it a problem with the switch or is it bad wiring? I think that I should have trained as a mechanic prior to driving this little beast!!How much can I expect to pay to have someone looking at it? or is it cheaper to re-train?