The glowing battery light when I switch more things on.
That's what i tried to mention a few posts before:
I think the battery light glow is depend on the alternator load,
not specially related to the reverse light.
The glow of the charging light may caused by the following:
- Defective diode in the self excitation circuit
- The output voltage of the alternator is exceeds 14.4V (this is includes that case, when
there's a significant voltage drop between the alternator B+ terminals and the battery)
- Inadequate output voltage of the alternator (which can be ruled out now)
You can narrow down the causes by checking the current flow towards the excitation
terminal (D+) of the alternator. Clamp current meter or a DMM which capable to current meterig
can be used also. The current will be less than 1A.
1st check the current flow with ignition on, before starting the engine.
Then start the engine and check the current flow after the battery light went off.
Now the current should be near zero.
Turn on some electrical consumers until the battery light starts to glow.
Check the current again.
If the current flow is reversed (in this case the amount is not relevant, only the direction)
then the problem might be fixed with thicker wires between the alternator and the battery.
If the current flow is not reversed, but the amount of the current was increased
then it might be diode problem in the excitation circuit inside the alternator.