No 12 volt charge power at 7 way plug.
I've got a 2019 Ford F-350. So I decided to cut the Lance propriety plug off the camper and wire up a bargman. I had a cord I bought from Torqelift many years ago, just in case I bought a new truck. T...
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Wharfcat wrote:
Just checked my charge numbers on the truck camper battery. I got 12.77 volts unplugged from the truck. Then I got 12.84 volts plugged into the truck with the truck at idle. Not as much as I had anticipated but it is charging. I suppose that number increases as truck engine RPMs increase.
No. The alternator has a voltage regulator, which keeps the voltage stable regardless of engine RPM. If the voltage is going up and down with engine RPM, you have a faulty regulator.
Your truck should go one step further and have an "adaptive" alternator that only charges based on demand. That is if the battery is charged and the demand of the vehicle is low, the alternator will lower its output voltage.
What you should be reading is roughly what's indicated on the voltmeter on the dash, or what you measure at the truck's starting battery.
