stay running

Will not stay running when the key is in the run position. The person at rebuild the transmission change the manual lever position sensor so I had to change the cannon plug could I get the wire mix up or is the switch not adjusted right 1991 e4od 351

What model year is the Bronco?
Engine size?
Manual or Automatic transmission?

What model year is the Bronco?
Engine size?
Manual or Automatic transmission?

e4od 351 1991

e4od 351 1991fix the ignition switch