"Don't forget to get an auxiliary switch to activate
the bridge between the two batteries if/when needed."

Paul, you've mystified me with that one. If the installation instructions
are followed (as Mark D just posted per his usually great, detailed,
accurate
posts), what "switch-to-activate-the-bridge ... etc" between the batteries
is
necessary?
The purpose of the 1315 is to act as a "smart relay" between the main
and aux batteries, which is why they are joined by the 8 gauge wire. NO?

bob

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