new member, issues with 2006 dodge 2500
 

I am having issues with my truck i do not have any heat in cab and now i have installed 2 a/c compressors and replaced clutch fan because i was told this could have something to do with a/c compressors failing. not sure if issue are related i have removed dash checked doors in vents all are working really lost at this point any ideas will be appreciated.
Also now when this truck is cold and not plugged in during the winter it will not start at all, like the computer is failing. once it is warmed up it will start but randomly driving or just idling it will cut completely out and then continue to run in most cases but once and a while will die. You can instantly go and restart it. once truck is warmed up does not act up at all?

Hope fully i have done this right thanks for any help anyone may have.