Features
[2-IN-1 DESIGN] Combines 4-way circuit tester and 7-way trailer light tester, suitable for most trucks.
[ADAPTER FUNCTIONALITY] Converts 7-pin output to 4-pin flat adapter, connecting 4-way trailer light plug.
[6 LIGHT FUNCTIONS] Testing, brake lights, reverse lights, turn signals, electric trailer brakes, and 12V auxiliary power.
[BRIGHT LED INDICATORS] Each function has a dedicated LED light for easy troubleshooting.
[QUICK AND EASY TESTING] Simplifies testing of trailer circuits for both 4-pin and 7-blade connectors. Fully covered by our free 30-day warranty, offered only by OPT7.
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Incandescent, 1 Bulb, Rectangular Clear, Utility Light, PL-10, 12V
0 Trailer Accessories - Incandescent, 1 Bulb, Rectangular Clear, Utility Light, PL-10, 12V
