No turn signals gremlin

Ok, wife was driving her car (72 dart) and a puff of smoke came out of the steering column. Now the blinkers don't work. We have already replaced: any and all fuses, blinker cam. Only replaced the cam since 42 year old plastic is brittle.

We have also checked 98% of the harness (just haven't pulled the ENTIRE CLUSTER YET). If there is a short its not from the drivers doors back.

Now here is the weird part......

The front hazards work but flash very quickly. However the rear hazards don't work and all four corners of the blinkers don't work.

Any ideas? I'm a Pontiac guy and wiring issues areUn't all that common so I suck at trouble shooting electrical.