Cancel Cam 70 Dodge Dart

I have a 70 Dodge Dart Swinger with the original rim blow steering wheel. I replaced the turn signal assembly when I did a full restoration but cannot figure out the cancel mechanism. There was not a cancel cam in the steering wheel when I purchased the car. Can anyone help? Russell Credle 615-476-3542
Thank you for the reply, attached are the pics. Thank you

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