John Stockdale , May 18, 2008; 05:34 p.m.
I assume you mean a 4x5 cold light head.
If you mean the Stabilizer, yes. If you mean the compensating Timer (which came later than the Stabilizer), also yes.
These units are generic in a sense, but they rely on a sensor being in the head. Which they were as standard for the Zone VI heads (at least the later ones if not all). The sensor was available as an add-on to other cold light heads like the Aristo units. Calumet used to sell the Zone VI sensors, but I think that they don't any more. They are a standard type of electronic component.
I have some old Zone VI instructions if you're interested in an email of a scan.