Guides that use

Car horn not working?

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

How to fix a car fan

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

How to test electrical circuits

If there is trouble without an obvious cause in any electrical component, test the circuit to fin...

Checking headlamps and lights

It is an offence in law not to have all obligatory lights working. Check them frequently, especi...

Checking and replacing the starter motor

If testing the starter circuit (See Checking the starter circuit) indicates a fault in the starte...

Fitting a new coil

If your car is misfiring or running badly, or has suddenly stopped completely, the most likely s...

Checking the brake light circuit

As well as being a legal requirement, it is also an essential safety measure that your brake lig...

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...

Fixing a reversing light

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

Fixing a heated rear window

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

Repairing an electric window

Electric windows are being fitted to more and more cars as standard equipment, while conversion k...

Diagnosing faults in automatic transmission

Although they are considerably more complicated than manual gearboxes, with control and operating...

How to fix an indicator stalk

The majority of indicator stalks are mounted on the side of the steering column so you can easil...

Troubleshooting the ignition warning light

The ignition warning light, sometimes known as the no-charge light, is one of the most important ...