I need help with a 3 door 1994 fiat punto 55sx there is an eletrical fault the main headlights don't work also the windscreen wipers and the heater and rear heated window are not working have tried all fuses but no joy has any body got any ideas

Test for 12v at the headlamp. If you have 12v, there's an earth fault (and if there's only one cause, it has to be an earth fault).

All the black wires are earths. Trace them back to the chassis, clean up well, smear with vaserline or silicone grease, re-attach. Continue until all the circuits work.