Chevrolet ranger rt Owner's Manual page 74

HOWTO: Monitor Panel
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Battery disconnect switch Inverter switch
You will hear a "clunk" as the battery disconnect switch is pressed - this is a big relay connecting the coach batteries to the
electrical loads.
If you hear a clunk-clunk, or nothing at all, it's possible that your batteries are depleted to the point where they cannot drive
the relay. The best way to charge your batteries in this situation is to start your vehicle engine and try again after it has
charged for a while. Once the relay is working, you can continue to charge with the generator or shore power.
Inverter Switch
Just as the battery disconnect switch powers the lights, fan, and other 12 volt electrical loads, the standard inverter takes 12
volt power from your coach batteries and changes it into 120 volt electricity. It powers some of the smaller 120 volt
alternating current loads, such as the TV and DVD player. This is the regular electricity you have in your house. With this
inverter, you can watch television or play a DVD while you are camping, without the need to plug into shore power or run
your generator.
The inverter is rated for 1250 watts maximum output. Larger loads such as the air conditioner are too big to run on the power
produced by the inverter, and will not operate unless you plug in to shore power or start your generator. The inverter will shut
off if you try to draw too much power through it.
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