Quote:
Originally Posted by gijoe View Post
Right. Running them close to something like a fuel pump can cause some trouble, but I've never had an issue with noise from power wires.
That fuel pump example would need a lot of pulsing current.

However you've nailed it with the grounds... most ground loop problems have a problems with multiple grounds, and big open loops.
(Fixing the alternator, does not fix the ground loop.)