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[dave10]

sory for all this but just bought and never had it out for a good run , no tax and postman seems to be forgetting to drop me insurace cert off , but when sitting there on tickover when i turn on the fans or put on the hazard lights ect , the interior lights goes dim for a split second. or with the hazards on the engine seems to build up revs and drop the same time as he hazards flash just put a new battery on it today any ideas

[Andy H]

Why did you have to fit a new battery?

I wouldn't worry too much until the new battery has had a good run to get some charge into it.

Be prepared to check that the alternator is charging correctly and that the terminals on all the battery leads and earth leads are in good condition.

[edit]If you have a digital multimeter it wouldn't hurt to check that the voltage was about 12v with the engine off and about 14v with the engine running.

Very occasionally people have had problems with alternators overcharging and damaging batteries and electronic components.[/edit]

[Entwood]

Answered in your other post ...

[KillerWatt]

sory for all this but just bought and never had it out for a good run , no tax and postman seems to be forgetting to drop me insurace cert off , but when sitting there on tickover when i turn on the fans or put on the hazard lights ect , the interior lights goes dim for a split second. or with the hazards on the engine seems to build up revs and drop the same time as he hazards flash just put a new battery on it today any ideas

I'd wait for the postman to drop that insurance certificate through the door