Moin, I drive a Punto from 2012 and wanted to convert the interior lighting to LED. When the LED was installed, I unfortunately generated a short circuit and after that the interior lighting was no longer possible with the original illuminant. I tested all fuses (under the steering wheel and in the engine compartment next to the battery all in order). A new used complete lamp unit was also not the solution. When I solve the plug and with the multimeter measuring 11.7v I plug in the plug and measure directly on the track it is 0 Where is the error?