Type 7 hole at one end of the trailer plug to the end of the tester Measuring range applies to 7-pin trailer plug socket connector (N type) test (MΩ) (MΩ) Test voltage 12 (V) (V) Model: TM4003 Origin: Ningbo Colour: Black Package Size: 17.5x5x4cm Package Weight: 0.195KG Suitable range: Suitable for 7-pin trailer plug socket connector (N type) test Product Features: 12V connection tester a trailer 7 hole plugs, the other end connected to the car 7 hole outlet. Tester lights will quickly show a trailer or a car coil is connected properly. Use description: Trailers (RV can also be used): 7 hole at one end of the trailer plug to the end of the tester Yellow button is pressed tester side If the LED lights all light up, indicating that the normal line. Each LED lamp functions as follows If the LED is not lit, the line is not connected correctly car The tester is connected to the car end socket Yellow button is pressed tester side If the LED lights all light up, indicating that the normal line. Test every car every pin socket functions: open the left turn signal, the tester Yellow No. 1 indicator will light up if the LED is not lit, the line connection error or a bad line. Repeat these two steps can be tested separately right turn signal / fog lights / etc
