Separate Power Supply... YET AGAIN!

[Souper man]

I meant to control the controlled current
ex. say pin 3 is chip x output. Where does the controlling output go to to control the motors, and in turn the entire circurt?

 

[Hero999]

I still don't understand your question.

The output from the comparator goes to the base of a PNP transistor which acts as a buffer; I have already illustrated this.

 

[Souper man]

No, I meant where does the controlling current/electrical signal go to?

 

[Hero999]

I still don't know what you mean.

The initial control signal comes from the potentiometer.

Going by your question you don't understand how this circuit works yet. Have you tried simulating it?