14-06-2014, 08:50 PM
I suspect that will have been the regulator pack on the back dying...
The whole not doing anything, but when you rev it the light goes out - that's the alternator self exciting as the residual magnetic field isn't strong enough to induce enough of a current in the field windings to start generating.
That's why you have the exciter (small) wire on the back of the alternator - this is what excites the alternator normally, that is applied to the field windings which then generates a strong current to start it generating.
But generally, if you've replaced the brushes, regulator - the bearings are probably on their way out, you'd end up in the good old broom with 3 new heads and 2 new handles situation before long!!!
The whole not doing anything, but when you rev it the light goes out - that's the alternator self exciting as the residual magnetic field isn't strong enough to induce enough of a current in the field windings to start generating.
That's why you have the exciter (small) wire on the back of the alternator - this is what excites the alternator normally, that is applied to the field windings which then generates a strong current to start it generating.
But generally, if you've replaced the brushes, regulator - the bearings are probably on their way out, you'd end up in the good old broom with 3 new heads and 2 new handles situation before long!!!
