stacaz822 wrote:
Interested in hearing what the "best" way to do it is.. I have been installing 12V and 24V DC systems in RVs and boats for many years, and have always run separate large gauge cables for the NEG side to all major devices, but also grounded the NEG to frame. Using Link 10 monitors, I have yet to notice much if any extra drain by only using the frame as NEG. The only problem with using frame as NEG is that it is more subject to corrosion on the connection, since they are usually exposed to the elements on the frame, underneath.
An individual wire for the negative connection.....to everything ......is much better, as you said above. Also having a frame connection should make things more reliable but can complicate troubleshooting and sometimes can introduce noise. Modern computer systems should NEVER have only a frame connection for one side of the power.