Afternoon, all.

I've a problem with charging on my '87 2.6 Montero engine, and a not sure of the cause.

Around a week ago, the battery light started dimly lighting up and flickering on/off while the engine was running - it went totally off again while driving home. When I got home, the the voltmeter showed just under 12v... normal would be around 14v. I haven't taken the car far from home since, and now the battery light is on all the time the engine is running. The battery light dims down when I rev up the engine and brightens when the revs drop back down toward tickover, but doesn't go out at any revs. The voltmeter shows just over 10v now.
The car will start after standing for a while - there's enough power there, but will barely crank if there's only a short time between stopping/starting - when buying gas, for example.

The battery is a year old and I'm not sure of its quality, so I put a new battery on this morning, but the battery light still comes on and stays on when the engine is running. It fades with higher revs but stays lit up.

Aside from the alternator, could anything else be causing the battery light to stay on?

I'm reasonably sure the grounds are good as she starts very quickly on a charged battery and the lights work well, etc. - but I haven't removed and cleaned the grounds.

I fitted a new starter motor and starter relay 3 weeks ago after some starting problems and also put in a new cable from starter to battery - could that have had an effect somehow? - Seems strange the alternator bugs out so soon after I replace some electrical components on the car.

Any help greatly appreciated as I know zip about most things electrical.


Cheers

Rob