STEELMAN PRO 78922 Bluetooth Trailer Tester
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<b>[Product Information]</b><br>
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<li>Users can quickly and efficiently test electrical signals by themselves</li>
<li>Plugs into six-way trailer connector found on back of all trucks</li>
<li>Corresponding App will show you if any signals are malfunctioning</li>
<li>Tests brake lights, running lights, reverse lights, turn signals, and even electric trailer brakes</li>
<li>Helps to quickly diagnose and fix the exact malfunction for safe driving</li>
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