How headlights work
All cars have sidelights and headlights. Older and non-premium cars tend to use halogen bulbs but newer, pricier and plusher models feature bulbs are filled with xenon gas, which gives a brighter, whiter light. These are also known as high-intensity discharge (HID) lights. The high voltages produced by this system can be fatal in the event of a shock, so the battery negative lead should be disconnected before any work is carried out on vehicles with xenon bulbs.
This task requires no experience and few, if any, tools, and will take a matter of minutes to complete.
When to replace your headlight bulbs
“Without a full set of functioning headlight bulbs you’re making night-time driving more difficult for yourself”
You need to change a bulb as soon as it blows. Without a full set of functioning headlight bulbs you’re making night-time driving more difficult for yourself and aren’t making your car as visible to oncoming drivers.
You also risk being pulled over by the police and face a possible fine, although you’ll usually be given a few days to replace the bulb (and prove you’ve done it) before facing further action.
What headlight bulb do I need? All cars are slightly different, so if it is time to change your headlight bulbs, find your car for specific instructions.
Why you should change your headlight bulbs
A blown bulb could get you into trouble with the law because your car won’t be road legal without a functioning set of headlights. A poor spread of light as a result of a blown bulb makes driving on any road at night dangerous, but country roads without street lighting are particularly hazardous.Tools you may need
- Flat-bladed screwdriver
- Phillips screwdriver
- Torx screwdriver
- Ratchet set
Parts you may need
- Bulbs
- Gloves
How much are headlight bulbs?
| Side lights | $1.80 |
| Indicator bulb | $1.80 |
| Single headlight bulb | $9-$18 |
| Upgraded performance headlight bulb (pair) | $35-$70 |
| Garage fee savings | $90-$180 |