Check for 12v power at the inverter end with a meter. For one test, put the ground probe on the inverter ground lug, and a second test grounding direct to the frame. A 12v reading to the frame but not to the lug means your fuses are fine but there’s an issue with the inverter ground connection. If there’s power at both, you still might have a reset on your inverter itself (lookup your manual- my Xantrex is a button on its side). If there no voltage there at all, you may still have a fuse issue at battery end. Thor hides fuses better than the Where’s Waldo illustrators. Can you isolate the + 12v cable between the inverter and battery? Check +12v on each lug of the inverter fuse, ground to frame- if power on only one side of fuse then reset fuse and try again.
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