Description
Heavy duty nylon housing. Bright LED indicator lights. Easy and quick to test trailer circuits on most trucks. 7-way flat tester can check all your trailer light circuits on your vehicle. Tests 6 separate trailer light functions: Turn, brake, tail, stop, reverse and 12V. Confirms you have the 12 volt power supply (often needed to charge batteries or operate interior lights on cargo trailers) which often blow fuses.

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