Guides that use

How to test a car battery

If your car's instrument panel includes an ammeter, it will tell you how well the charging syste...

Checking a starter circuit

If the starter does not turn the engine although the car battery is in good condition, the fault...

Identifying and suppressing radio interference

Car radio interference originates usually in the ignition system, the charging circuit or among ...

Checking the high-tension circuit

The high-tension (HT) or secondary circuit carries high-voltage electricity. It runs from the se...

Inspecting the ignition system

Inspect the ignition system whenever you make a general under-bonnet check. It takes only a coup...