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Battery Light Staying On.


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#16 Ethel

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Posted 20 November 2020 - 01:35 AM

Where's the voltmeter connected?

 

The ignition light is between the +ve connections of the alternator & battery, it goes out when the alternator produces a voltage close enough to the battery's thus cancelling each other out so that not enough current can flow in either direction through the bulb to light it up.

 

If it's an intermittent fault & battery & alternator voltages measure within a few volts then it could be there's a short on one side or other of the bulb.



#17 JCmini

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Posted 25 November 2020 - 10:33 PM

Update.

New alternator. Problem solved.

#18 roblightbody

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Posted 27 November 2020 - 02:10 PM

Since returning to classic minis in 2006, i think they've gone through about 4 or 5 alternators. They're almost a consumable for me and when doing long road trips i keep a spare in the boot.

If in doubt just change it. They aren't really that expensive on the scale of things.

#19 JCmini

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Posted 27 November 2020 - 08:29 PM

It's done well. OEM from 1991. Still has the manufacturer sticker.I've upgraded to a 65amp one now. £50.95. Not bad.

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Edited by JCmini, 27 November 2020 - 08:38 PM.





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