Beam setting
- Make
- Fiat
- Model
- 500 Classic Workshop Manual
- Year
- 1957–1975
- Section
- The lighting system › Beam setting
Beam setting
Accurate setting is best left to a service station equipped with the necessary equipment. The main beams must be set parallel to the road surface or in accordance with local regulations. Adjustment is made by turning the top screw 1 as indicated in FIG 11:17 for the vertical setting and the lower screw 2 for the horizontal setting.
Front parking and direction indicator lamp
To replace the double filament bulb, release the screws securing the lens to the lamp casing as shown in FIG 11:19 and remove the bulb from its bayonet holder. Where the parking lamp is in the headlamp unit the bulbholder can be pulled out inside the front compartment.
Rear parking, direction indicator, stop lamps and reflector lens
To renew any of the two bulbs remove the two screws securing the lens to the lamp casing as shown in FIG 11:20. Bulbs are fixed by bayonet couplings.
Side direction indicator lamps
To replace the 2.5W bulb slide off the bulb holder from the rubber socket located as shown in FIG 11:19. The bulb is secured by a bayonet coupling.
Number plate lamp
To replace the bayonet coupled 5W bulb remove the lens and light cap mounting screws as shown in FIG 11:21.
Lamps give insufficient light
Test the state of charge of the battery and recharge if it is necessary from an independent supply. Check the setting of the lamps. If the bulbs have darkened through age fit new ones.
Lamps burn out frequently
If this is accompanied by a need for frequent topping-up of the battery and high hydrometer readings, check the charging rate with an ammeter when the car is running. This should be around 3 to 4 amps. A reading in excess of this calls for adjustment of the regulator.
Lamps light when switched on but gradually fade
Check the battery as it is incapable of supplying current for any length of time.
Lamp brilliance varies with the speed of the car
Check the condition of the battery. Examine the battery connections. Make sure they are tight and renew faulty cables.
Parts & tools for this job For 1957 Fiat 500 Classic
- PARTReplacement bulbsSearch: Fiat 500 Classic 1957 bulbs
- TOOLDigital multimeterSearch: automotive digital multimeter
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