my 2007 tucson wont start, check engine light wont come on with ignition on

What is your question?

Battery cables were backwards, what damage did i do, 2007 hyundai toucson wont start, check engine light wont come on when ignition is in on position, but still turns over no problem, but wont start, please and thank you

What makes this problem better or worse?

wont start at all, but turns over no problem

How long has your 2007 Hyundai Tucson had this problem?

5 months