New Trailer Plug And Socket Tester Car Vehicle Electric Light Tester Portable

New Trailer Plug And Socket Tester Car Vehicle Electric Light Tester Portable New Trailer Plug And Socket Tester Car Vehicle Electric Light Tester Portable 1. Put The Plug In The Connection Of The Tester. 2. Press The Yellow Button On The Side Of The Tester. 3. If The Wiring Is Good, All The Led'S Light Up. The Function Of Each Led Is (Acc Lso 1724): 1.) Left Hand Indicator (Yellow); 2.) Fog-Light Or 12V (Blue); 3.) Mass (White); 4.) Right Hand Indicator (Green); 5.) Right Rear Light (Brown); 6.) Left Brake Light (Red); 7.) Left Rear Light (Black). Attention: The Pin No 2 Can Be Used Either For A Warning Foglamp Or A Permanent 12V Connection. 4. If A Led Doesn'T Light Up, It Is Because The Corresponding Wire Is Defective. If All The Led'S Don¡¯T Light Up