have you took the plastics off the column and tested all of them...there is a little mechanism in there that transfers power in and out. It has wires that come in and split off for the diff key settings on the ignition tumbler. Its for the accessories, ignition, and fuel related for signal....It can go bad, burn out in a certain area etc ..it is a main power spot in the ignition system...

good luck man....almost got it..