battery warning light.

Bought a zr 1.4 55 plate about three months ago, its the sixth mg I've ownedsoi though knew them pretty well, but having a problem with this one I cant fathom, I ain't no mechanic butthunk i've narrowed it down.

First of all my battery warning light came on, brand new battery si thought the alternator, so changed it, all good, two days later the starter went so changed that, all good, well for about two weeks anyway.....

A couple of days ago the warning light came back on, and it wouldn't start. Took the battery off and charged it over night, put it back on and it started, however, the battery warning light was still on. When in neutral, If I rev the engine it goes off then returns when I take my foot off the gas....long winded I know, sorry.

Any ideas, I'm thinking dodgy alternator,or could it be anything else, help, please.

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