1999 / Honda CR-V

At the top of the fuse block inside the car there are a bunch of options
connectors.

Some of you have seen my prior postings concerning turning the cig. lighter
to "always on".

The question is this:

I know which of these is powered by the battery, always on.

But for ground: If I discover one of these options connectors to be 0 Ohms
resistance (impedance?) from it to the chassis, can I assume that there is
nothing else "on it" and that it is OK to use as the ground for the cig.
lighter?

I want to avoid an ugly wire going to a chassis bolt.

Is it possible that there is some signal ground that is different that
chassis ground that will hurt something else on its circuit once the cig.
lighter is used?

Thanks!





--
"It's easier to be terrified by an enemy you admire."
-Thufir Hawat, Mentat and Master of Assassins to House Atreides