Jebiruph
Well-Known Member
- Thread starter
- #1
At some point (MY21?) a change was made to the ESS negative battery cables, swapping the cable ends between the aux battery cable and the body ground cable. This makes it easier to disconnect both batteries from body ground, but makes it more difficult to disconnect just the aux battery.
Here's the main battery negative terminal with the battery sensor attached and the cables disconnected.
Cable A old connects to the body ground, new connects to the aux battery negative.
Cable B old connects to the aux battery negative, new connects to the body ground.
With the old cables, disconnecting cable B disconnects just the aux battery negative. With the new cables, this should disconnect both batteries from the body ground.
With the new cables, removing both cables and reconnecting cable B (body ground) should disconnect just the aux battery.
Here's the main battery negative terminal with the battery sensor attached and the cables disconnected.
Cable A old connects to the body ground, new connects to the aux battery negative.
Cable B old connects to the aux battery negative, new connects to the body ground.
With the old cables, disconnecting cable B disconnects just the aux battery negative. With the new cables, this should disconnect both batteries from the body ground.
With the new cables, removing both cables and reconnecting cable B (body ground) should disconnect just the aux battery.
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