Have a prob go mudding alot have a 95 Cherokee 6cly 4.0 but seems like every time I get in big holes my alternator goes out prob cause it's wet or something. What can I do?

 

just getting it wet shouldn't make it fail
ive submerged mine plenty of times with no issues

 

Getting it wet isnt the problem, you're going mudding therefore you're packing it full of mud.

Make a tray/skid plate that goes under connecting to the front cross member. that will shield it from a majority of the mud and prolong the life of the alternator big time. I did that for snow on mine.

 

Ditto on mud and/or loose wires. Ultimate solution: move your alternator higher....
http://www.naxja.org/forum/showthread.php?t=1016719