OK this is the deal. The 6.0L is all hooked up mounted and everything. You turn the key on and it does everything right, just wont start. wont even turn over. I was reading forums before and ive heard the the fuse/box/PCM is dif on a 4.3L and a 6.0L. Where can I get a wiring diagram so I can go in there manualy and put everything in the right Pin #. Ive seached the internet and nothing. It is a 99 4.3L V6. and the new motor is out of a 2001 2500 HD 6.0L LQ4. Im needing yall bed guys. Please HELP!!

Daniel