Key cylinder stuck in "ACC" position
 

95 F-250 is stuck in the "ACC" position. Key will turn forward and crank the truck, but wont go back to turn off the truck. I am disconnecting the alternator and batteries to shut the truck off, but im trying to find a better way. It is primarily used as a ranch truck. If there is a wire I can splice and toggle im open for suggestions, or an actual correction to the problem will work for me