Replaced battery in 2000 Dodge Ram 1500 4x4 2 weeks ago running fine until today won't start get lights and radio but won't even try to start .Could it be a short or fuse or alternator?

SOURCE: 2001 Dodge Ram 4x4 5.9, won't start.

needs a tune up on plugs wires and maybe coil pack but coil is last resort

SOURCE: Need help with 1994 Dodge Ram Charging system Repair

Check your battery cables and connections at the starter and check the main grounds

SOURCE: my 2001 dodge ram 1500

on the alternator did you put the little washers where the regulator bolts on back of the alt they must be tight and also the ground cable from the battery to the alt bracket must be tight and grounded sounds like a loose connection
the washers go between the alternator and wires coming out of the harness and the alt also it probalbly goes dead occasionally when you crank it up

SOURCE: 2001 dodge ram keeps over charging battery

you need to have the pcm checked...it acts as the voltage regulator

SOURCE: 1996 Dodge Ram won't start

run another test on the starter...they are about 20/80 bad/good right out of the box!