Fog and driving lights add period detail to a classic MG while supplementing the main headlamps with auxiliary lighting, the fog lamp providing a wide low beam for poor-visibility conditions and the driving lamp providing a narrow long-range beam for fast night driving. The classic Lucas round chrome lamp is among the most evocative accessories of the British sports car, and these lamps were popular additions throughout the 1950s, 1960s, and 1970s, fitted as factory options on some cars and as dealer or owner accessories on many others. MGOC stocks both 6-inch and 5½-inch sizes, the 5½-inch lamps typically supplied in pairs complete with protective covers, in period-correct Lucas-style chrome housings and in modern LED alternatives.
Fog Lamps
A fog lamp produces a wide horizontal beam that lies low on the road surface, providing visibility in fog, heavy rain, or spray where a conventional headlamp beam would scatter off the airborne moisture and produce more glare than useful illumination, the low-mounted wide beam staying underneath the worst of the moisture and lighting the road surface itself. Quality fog lamps use a horizontal-cut beam pattern with the light concentrated below a sharp cut line, and period-style versions are stocked in chrome housings matching the appearance of original Lucas units such as the SFT576 and the smaller SFT462, with replica versions, replacement bulbs, lens-retaining screws, and the classic Lucas lamp covers in their period motifs that protect the glass when the lamps are not in use, alongside modern LED fog lamps in similar housings combining the period appearance with substantially better output.
Driving Lamps
A driving lamp produces a narrow high-intensity beam designed to supplement the main beam at high speed on unlit roads, extending the lit distance substantially further ahead than the headlamp beam reaches, useful on rural roads with long straight sections and on fast night drives. The driving lamp is used only with the main beam selected and switches off automatically when the dip beam is used, preventing dazzling oncoming traffic, and was a common period aftermarket fitment, often matched with a fog lamp for cars used on long-distance events, the Lucas SLR576 being the classic counterpart to the SFT576 fog lamp with a driving-beam lens rather than a fog diffuser. Period-style driving lamps in chrome housings match the visual appearance of original auxiliary lighting, with modern LED versions delivering dramatically brighter output across the same beam pattern.
Mounting & Wiring
Fog and driving lights are typically mounted on the front bumper, on a dedicated badge-and-lamp bar behind the front bumper overriders, or directly on the bodywork using specific brackets, the choice depending on the visual style being aimed at, with handed left-hand and right-hand brackets stocked for some applications because the mounting points on each side are not symmetrical, so the side of mounting should be confirmed when ordering. A lamp wiring fitting kit is strongly recommended for any auxiliary lamp installation, including the wiring, connectors, fuse, relay, and switch needed to install one or two lamps without overloading the original wiring, as direct connection to the existing headlamp circuit is not recommended, the original fuse box having minimal current capacity beyond the factory load, and the relay being essential because the lamp current would overload the switch and wiring if connected directly. A rear fog lamp kit provides a single bright red lamp mounted low at the rear, which UK law requires to be switched independently of the headlamps with an indicator light reminding the driver it is on.