1993 Dodge D250 Question: Blower Wire/Power Window Wire Overheating at Ignition Switch

The Blk/Org Wire coming out of the ignition switch to the fuse box is overheating. Problem was discovered after power windows stopped working and having to jiggle the key to make it work. The wires continue to overheat when held together and operating the windows and blower motor either independently or at the same time. I changed the motor. Used a jump wire from the battery to the Blk/Org wire. Any other suggestions. This has had me baffled for over a year now. Your help would be appreciated.