English translation: control circuit cable-layout plan
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Explanation: Well, "Kabelführung" is "cable routing" according to the dictionary, and "plan" would normally be translated as "diagram" in this context. A "Regelkabel" is, I imagine, an electric cable for carrying control signals, and since "signal cable routing diagram" gets a couple of relevant-looking Google hits (see below, Figure 2-16), I'd plump for that. "Control cable routing diagram" is also a possibility though.