Do you know what the sorce of 12 volt power stems from. Is it a direct supply form the batteries or is there a voltage reducer in the system.
If the is a voltage reducer it could be failing under load. The type of reducer that we use
Are 48/12/ 30 amp. This type unit is strong enough to supply the correct current and not decrease in voltage under normal loads. The rating and amps is usually printed on the unit.
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