07 International 9900i ign problem

This is the basic power feed to your key switch, then that power goes out to several different circuits. Does this do this in the accessory position? If so, it is accessory related. Try to remove the ignition relay and see if the breaker pops. If it does, something must be shorted between the key switch and breaker panel since no other breakers are popping. Could also be the key switch itself shorted internally.

 

Did you ever fix this, I have 05 9900 with same problem. I replaced both solenoids and all fuse and relay are good. I’m gonna just bypass it by putting a push button in the truck.

 

Smart and eazy way to fix .