Accessories

21 guides & 159 illustrations

Accessories

How a speedometer works

Of all the instruments you can find on a modern car dashboard, only one is a legal requirement -...

Accessories

Car horn not working?

Cars are usually fitted with a high-frequency (HF) or windtone horn as standard equipment, norma...

Accessories

Checking the instruments

A car usually has up to six main instruments — speedometer and tachometer (rev counter); fuel, o...

Accessories

How to check a relay switch

If a component that is fed with electricity through a relay (See How car electrical systems work...

Accessories

Fitting new headlamps

Sealed-beam headlamps are simple to change, but the way of gaining access to them varies from ca...

Accessories

How to fix a car fan

Electric radiator-fan motors are switched on either by the ignition switch - and run while the e...

Accessories

How to fix a car heater

The car's heating system consists essentially of a motor-driven fan to blow warm air from the en...

Accessories

Fixing a heated rear window

There are a number of possible causes for a rear window heater not working, including a blown fus...

Accessories

Fixing a reversing light

Reversing lights are not generally a legal requirement but they are useful. They serve two purpo...