Nissan Repair: Pathfinder wont start all the time, nissan pathfinder, positive cable

Question
i have a 1994 nissan pathfinder and it won't start all the time. I replaced
the starter , the battery,the battery termanals  also the positive cable
from battery to the starter. I also replaced some of my relays,and I still
cant find the problem can u help me . Thank u  

Answer
James,

It is most probably the ignition key.  There are carbon contacts that wear down and since you replaced everything else that is the next thing to replace.  16 years is a long time and a new ignition switch would most probably cure the condition.