Properly installed the inverter. It worked for a week and now it will not provide power to any of our items in our truck. It shows no draw and 14 amps but it shuts down immediately. I have gone they all wiring and changed the ground point have down all troubleshooting to make sure it is not in the wiring to the inverter. It’s hooked up to a 4 battery bank. The inverter itself just will not provide any power. It shows it’s on. We can have no draw on it what so ever and it shuts down our microwave. The microwave will not be running. It will continuously do this for several minutes. Provide power for maybe 10 seconds then off again for a few minutes and repeat. We just turned it off and cannot use it as it will not properly work.