Quote:


You can bet that the battery is the source to tie to when trying to minimize noise. The battery terminals are the closest point where you will have pure DC. The alternator is a rectified AC device and it will have a ton of noise on its output.




Any noise at the alternator output will be seen everywhere whenever the alternator is producing. Even at the battery.

You'd be better putting a filter in if it's an issue. Which is why you usually see a cap on the alternator output, to filter it.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.