It is the cruise amp without a doubt...the large bundled wires end at the actuator, the smaller bundle to another connector that goes to the switch on the column. If it is disconnected, be aware that sometimes people have problems with cruise systems engaging and accelerating on their own when the amps go bad - be mentally prepared with a shutdown procedure in case it happens to you while you test it out.

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1982 Mercedes-Benz 300CD
1982 Mercedes-Benz 240D - stick