Auxiliary lighting guides: fog, spot, driving and daytime running lights
Auxiliary lighting guides cover the lamps added to a vehicle beyond its standard headlights and rear lamps: front and rear fog lamps, spot and driving lamps for long-range light on the road, and daytime running lights. The section holds four guides that explain what each lamp does, the UK rules on when it is switched on, and how it is fitted and wired.
4 guides
- Auxiliary Lighting
Daytime Running Lights: How They Work and Fitment Options
A daytime running light is a forward-facing white lamp that switches on automatically when the engine starts, making the vehicle easier to...
- Auxiliary Lighting
Driving Lamps and Spot Lamps: Long-Range Illumination Explained
A driving lamp is an auxiliary forward-facing lamp that extends the range of a vehicle's main beam on unlit roads and tracks....
- Auxiliary Lighting
LED Fog Lamps: Upgrading from Halogen for Better Cut-Off
An LED fog lamp is a vehicle fog light that uses light-emitting diodes as the bulb source instead of a halogen filament....
- Auxiliary Lighting
When to Use Fog Lights: UK Law and Common Misconceptions
UK fog light usage rules permit front and rear fog lamps only when visibility falls below 100 metres. The Highway Code sets...
Fog, spot and driving lamps
A front fog lamp throws a wide, low beam under fog and heavy rain and is used only when visibility drops below 100 metres. A driving lamp adds range to main beam and switches off with it. A spot lamp is a work light for the field, not the road. The guides give the beam pattern, the E-mark that makes a lamp road legal and the relay wiring for each.
Daytime running lights
Daytime running lights are white front lamps that run whenever the engine runs and switch off or dim when the headlights come on. The guide covers the fitment options for tractors and pickups and the LED units in the auxiliary lamps range.