Set your multimeter to DC VOLTS, 12v scale. Have all fuses in but turn off the converter. Then put the leads across the terminals of each self-reseting breaker, one breaker at a time. Good ones will show 0 or nearly 0 volts. Bad one will show 12 volt or so.
2000 Cherokee 31BH, "flipped axles and raised",LEDs, solar, inverter, etc..aka "boondock ready". '07 Tundra 5.7L DC-LB, modded as well.
2000 Cherokee 29BH with 6V batteries, LED lights & 400 watts of solar power, flipped axles and raised. 2007 Tundra 5.7L DC-LB with lots of mods. C-co, 8/158th AVN Maint.