The following electrical wiring diagram and troubleshooting manual apply for Fiat Uno (a supermini car produced by the Italian manufacturer Fiat and was launched in 1983). Here you will find detail description, explanation, and illustration of the vehicle electrical system including alternator (maintenance, precaution, overhaul, removal and refitting), battery (inspection, charging, removal, refitting), control module system, cigar lighter, courtesy lamp switch, electrical window, lightings and lamps, electrical system fault finding, fuses and relays, horns, instrument panel, motor, starter, voltage regulator, etc.
The electrical system is of 12 volt negative earth type and employs a belt-driven
alternator and a pre-engaged type starter motor. The battery is of maintenance-free type and under normal circumstances, no topping up will be required, but regularly check that the electrolyte level is between the minimum and maximum lines on the translucent battery casing.