Camper a/c not working

I have already checked all wiring that i could reach and that includes where you take the plastic filter screen and filter off on the inside of the camper and all of the wiring ties into the board. The only area that i worked in during the change out was where the actual convertor was. It has 5 wires that connected to it, not counting the power wire. 1 ground, 2 that go into a pos port, 2 that go into a neg port. The thought did cross my mind that one of those wires in the 2 pos/neg ports may have a bad connection, but even though i'm not exactly sure where those wires go, i wouldnt think any of them belong to the a.c. unit. Plus, the a/c stopped worked the second the convertor went out..before i even touched anything to try to troubleshoot.