[nlarson]

New wires came in, 2ga is bigger than OEM which is 6 I believe so should be big enough.

I don't think it's over tightening, as we have more than one cart and I do all the others the same, and don't put much pressure on. That said, the heat on some has made the nuts unremovable on a few so I am going to top post connectors as soon as I can get to the part store.

Someone mentioned the lugs being suspect, and I am thinking that may be it. They were an ebay or amazon buy, supposed to be tinned copper but maybe where just crap, post top connections should eliminate that possibility.

Thanks all, will update either way.