wonder what color wire provides power to turn selector switch on steering column. I checked under dash for fuse 23, and all maxi fuses under hood are good. Also swapped the turn signal relay under dash and no success. Any help apprecited. have yet to clean the pins on the firewall harness connection.

 

after cleaning upp all my fuses and venturing on to other areas on the truck that needed attention it was when I disconnected the drivers side power mirror wires that the turn signals began to work again. must be on the same circuit somehow.