Magnum inverter shows fault and low voltage going down the road. NP/OK on shore power and Genny running, is there a relay that's open from the engine alternator? The gauge is showing 13 volts +. NP with truck batteries.
I'm with Ex-Calif Dirty connectionsDirty power connections somewhere from the alternator to the bus?
The isolator is usually a solenoid device. looks a bit like a starter solenoid and works much the same way but where the starter is "Short term use only" (Hold it for like 10 minutes the coil burns up) the isolator is either magnetic latching or "Continuous duty" If the contacts are damaged you get a serious voltage drop through it.isolator? battery compartment?