turbo diesel wont start

got a 06 dodge turbo cummins, with a quadzilla hooked up. i got a couple of subs put in today and everything was goin fine. a few hours later it wouldnt start. fires but wont crank over. somebody help if ya can

I have a red quad cab ram 25oo cummins o5 I will talk to my dad and will get back

I just talked to my dad and he talked on some of his forums and said that you could have wired it wrong.

make sure the battery cable ends are tight. I assume you mean NO starter, but if it would, it would start? the starter is easy to get to if needed to. try starting it in nuetral..............