Direct Current Recap

These questions have come up recently in a mobile install that I'm collaborating on.  Here are two links to old posts:

• Mobile Radio Power: One Fuse or Two?  TLDR: One.  Why?  Click through and read.
• The Right Way to Wire a Battery Bank  TLDR: see illustrations below.  Why?  Click through, read, & watch.  This makes way more difference than I'd have previously believed.

        Do:

         Don't:

            Addition 7/25: A friend in the electronics business advises that the chief source of resistance in the inter-bank jumpers is not the cables themselves, but rather the oxide layers that form at the connectors.  Makes a lot of sense.

Before we go, here's one more worth a read:

• How to troubleshoot a jumper wire, because even the simplest things sometimes break.