03 ccummins SO auto no start no click. Replaced starter same issue. Relay is good as is pin voltage. Cleaned terminals batteries are within reason. I'm thinking ignition switch? Any ideas will be appreciated.

 

SO no start no click first thing I would ask is, what is your voltage of your batteries unplugged. if its below 12.4V you have a drained battery. next would be to check you voltage to your starter and compare it to the voltage of your battery this will be checking voltage drop anything less than .5V the cables need cleaned or replaced. Next would be to check the little exciter wire on your starter, that little lonely fella all by him self on the body if it does not get voltage when the key is turned we need to move up the line. Check all your fuses, your ignition switch is powered by a fuse not the directly from the batteries. If all is well i would check your neutral safety switch in the steering column you can jump it with a piece of wire and see if it works, if its good I would suspect a bad switch.

 

Got it fixed had me going it was some random relay zip tied up by the firewall? I'm guessing not stock not sure what it is but I'm glad it's working. Thx for the help

 

Yea that someones creative wireing.