328 Turn signal problem - Not hazzard switch

My turn signals have been intermittent in the past but are now dead. I have pulled apart the hazard switch and found that it was functioning properly. I can power the wires from the center console (where the hazard switch connects) manually and the turn signals will light up, but not flash. I have simulated the hazard switch by connecting all wires the same as the hazard switch and that didn't fix the problem.

I think that that culprit is the white wire stripped black (BN in the wiring diagram) that is connected to the turn signals with the hazard switch in normal position. That wire has no power and is not a ground.

Does anyone know what that wire is supposed to do? Thank you very much!

Gene