Electrical fault

[gaza]

I have a Rover 214, when it engine is running the lights start to flicker, when the engine is not running they are fine, what could the possible cause be thnx.

[Mortartube]

There may be a loose/chafed wire or connection which is affected by the vibration when the engine is running. Oyherwise you may have a faulty alternator or faulty voltage regulator.I would check the wiring first.

[passatman]

It could be that the Rover 214 is actually a Morris Marina and they are rubbish cos my dad had one...I reckon!

[smithy]

I'd go voltage regulator/alternator diode pack. When off the voltage is 12V from the battery. When running the voltage should be steady at > 12v to charge the battery. Yours is all over the shop hence flickering lights

[pezza.......]

If, when you rev the engine, the lights dim even more, the alternator is the likely candidate.