Halogen Bulb Lifespan: What Affects It and How to Maximise It
A halogen bulb lasts between 500 and 1,000 hours of use in normal conditions. The figure is the rated life set by the manufacturer, and it assumes a stable voltage, clean handling, and little vibration. On a tractor or a work lamp, none of those conditions hold, so a halogen bulb on a farm vehicle […]
Why Do My Tractor Bulbs Keep Blowing: Common Causes and Fixes
A tractor bulb that keeps blowing has one of five root causes: charging-system over-voltage, vibration, wiring or earth faults, fitting damage (skin oils on a quartz envelope or a knock during handling), or the wrong bulb specification fitted in the first place. The bulb itself is almost never at fault on a single replacement, but […]
H4 vs H7 Bulbs: Differences, Uses, and Which One You Need
H4 and H7 bulbs are the two most common halogen headlamp bulbs fitted to tractors, telehandlers, and farm vehicles in the UK. The H4 bulb is a dual-filament unit that provides both dipped and main beam from a single bulb. The H7 bulb is a single-filament unit that handles one beam function only. The two […]
Vehicle Bulb Types Explained: A Complete Reference by Code
A vehicle bulb is identified by an alphanumeric code that fixes its base shape, filament arrangement, wattage and rated voltage. The four most common families of code on UK road and agricultural vehicles are halogen headlamp bulbs (H-series), bayonet bulbs (P-series), capless wedge bulbs (W-series and T-series), and festoon bulbs (C-series). Each code has a […]