Has anyone had this issue? I was charging the ac and had the truck running for about 30 min. I went into the cab and noticed that all the gauges weren't working and all dropped to nothing but the instrument lights and truck were still running. What are your ideas of what this could possible be. I plan on driving this truck real soon and would like to get this problem fixed beforehand.

Thanks for any and all help.

MAY GOD BLESS ALL
IN JESUS' NAME

THOMAS