That's really a bummer Rick. If the inverter works stand-alone it has to have something to do with the ckt that the inverter output is wired in to. I was hoping for some answers myself if for nothing else to satisfy the curiosity. Have fun out there!
2015 Greyhawk 29MV
Honda CRV toad with Blue Ox baseplate
Ready Brute Elite towbar with braking system
TST 507 Flowthru TPMS