Our family owns a 321BH and we made the decision to get a lithium battery and inverter in hopes to power the RV. we have a 300ah Vatrer Battery, and a 3000w inverter with passthrough. I connected everything right, or so it seems. I was able to get some of the outlets, tv and microwave to turn on. Using the inverter prep. I can't figure out why only 1 leg is being powered and not the other. I would like everything to be ran off the lithium battery. Any help in this would be greatly appreciated.

