Power cable for diagnosis and reprogramming of SWM Euro 4 vehicles. It is necessary to use this cable if the vehicle being analyzed does not have a specific power outlet. In this condition, the 3151/AP55 cable is connected to the 3151/AP51 cable through the corresponding 2-way connector. ATTENTION: The 3151/AP55 cable is compatible only with the 3151/AP51 cable. Do not use it in combination with other cables.