Curtis Fuel Gauge

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Curtis Fuel Gauge

Tom Jones-5
I'm confused about the proper installation of the Curtis 900 fuel gauge.

This is what the installation instructions say:

>Connecting Model 900R

>The unit's positive (+) terminal connects to the first battery positive (+)
>closest to the battery.

>The unit's negative (–) terminal connects to the first battery negative (–)
terminal closest
>to the battery.

>Wiring must go directly to the battery. Do not route through the key switch
or contactors.
>The LED display will always be "ON."

It makes it sound, from the reference to "the first battery" that they are
connecting to only one battery. Is that correct?

Do people actually leave then connected and ON all the time? Is that
necessary to find the peak voltage during charge?

Thanks is advance,

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