Hello, I have proven, wiring continuity from the EPU to the headlights and 4 relays two twins, and two others that are under it, but without knowing or what they are for, I have opened the EPU and nothing is observed that has produced spark Weakly, perhaps the black cable is mass, but not with the engine, now I will check the control taking advantage of the fact that I am installing a momentary momentary installation I want to feed the relay (Borne 86) with the positive of the crossing light. However, I do not want this to be the solution, the car installation is intact until it is able to solve the problem. Thanks and greetings