Rather than pushing a button to see the relative state of charge of the house batteries, I installed a digital voltmeter in the wall above the electronic information panel.
I purchased the voltmeter at Amazon.com (
Amazon.com: Red Light Digital Voltmeter DC0-100V LED Panel Voltage Meter: Electronics)
$2.49 with free shipping
- Remove the control panel from the wall and let it hang on the wires.
- Cut a rectangular hole the exact size of the voltmeter face in the wall paneling.
- Using "Goop" glue the ears of the voltmeter to the back side of the wall paneling.
- Using a multimeter or 12-volt test light, locate a source of 12-volts at two of the wires in the control panel.
- Tap into the wires with the + and - wires on the voltmeter (polarity is important or you will ruin the voltmeter), solder, tape, and apply liquid tape to the taps.
- Replace the control panel.
- Now whenever the coach power is turned on I can read the voltage from the doorway, kitchen, hall, or bedroom.
I also made a cigarette lighter voltmeter from one of the digital voltmeters and leave it plugged into the dash 12-volt power outlet.
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