Winegard G2+

I got two different ones. I did connect straight from receiver to power inserter to dish. I worked. But had to keep connecting and disconnecting wiring in coach from a/b switch. The G2 just put it out ( I have a portable battery charger with 12v.) connected to charger. It found sat. and worked though a/b. I just got tired with the G@+ of undoing all the wiring in the electronics bay to get it to work. Really did not know if anyone else ran into the problem and what they did that worked with the G2+ with any type of a/b switch. By the way the second G2+ was dead even when wired directly. Just got a bad one I guess.