Not sure what you mean about the "wire to the control unit".... Unless you are stating the throttle control rod to the governor arm is missing. It in fact is....
The brackets behind the front axle on the frame are for a mower deck.
The ones on the side of the grille housing are whats left of the steel mount for a rubber Grote work light someone installed, and I guess ripped off. There were lights on it....
This thing is pretty rough.....
But, we've seen worse.