What makes the light dimmer?

A pronounced dimming of a reflector is usually caused by a relatively easy-to-repair electrical fault or an irreversible change to the interior of the reflector.

Behind the weakening of the glow of the bulb in a classic headlamp is most often an increase in the resistance to the flow of current in the power circuit. The reason for this is usually the lack of a proper connection of the cube or lamp holder with the so-called vehicle weight. This is due to contamination and corrosion of the surfaces of electrically conductive contacts or insufficient contact between them due to reduced pressure. Usually cleaning the contacts restores the lost glow of the light bulb. If the damage to the contacts in the power supply is too great, they should be replaced, preferably together with the power supply.

Sometimes, although this is a very rare case and at the same time easily detectable, the decrease in the brightness of the reflector is caused by human error, which consists in installing a light bulb designed for a 12V power supply instead of a 24V lamp.

Unfortunately, weaker reflector light is also often the result of reflector surface changes. Corrosion, flaking, discoloration, or haze causes the mirror surface to reflect less of the light emitted by the lamp. The headlight is dimmer, which makes it difficult for the driver to see what is happening on the road after dark, and this is very dangerous. A damaged reflector in a headlight practically dooms the whole thing to a replacement. However, there are companies that professionally restore headlights, including their reflectors, which in the case of atypical lamps will be the only solution.