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(888) 312-8812 Login SignupThe Mack Back Up Alarm restores the audible warning a silent or intermittent alarm loses, the signal that people working around a reversing truck depend on to stay clear. It wires into the reverse-light circuit so it sounds automatically whenever the transmission is placed in reverse. It takes the same rear-frame bracket location as the alarm it replaces, plugging into the wiring connector already there. Replacing the Mack 24072573 keeps that reverse warning audible for anyone working near the truck.
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