cranks but won't start?

Alright guys, I got the 2000 5.2 magnum in my 63 Crewcab this week! I used the Durango wiring harness, ecm, pdc, guages etc..I can get the truck to crank, but it won't start? I have spark and I have fuel to the rails. My voltmeter busted , so just testing with a test light the injectors are firing. I can get it to run by spraying ether in the throttle body then it runs fine, but will not start again on it's own. I just have the Durango tank in the bed of my truck for now with the original pump/sending unit. Also, when it is running the alternator is not charging, any relation to not starting? Everything worked fine in the donor, what has changed or what do I need to look at? I will be going back over all my grounds tomorrow. Amost forgot, i don't have the exhaust hooked up, just the manifolds. Thanks, Andrew