Hello, have installed today in my MAN TGL a voltage converter so that I can operate a normal car radio. Unfortunately, the green POwer LED from the converter always lights up when the radio is switched off ! My question: Can the small LED suck the battery empty? Have a small switch in between jammed unfortunately this is also not the right solution , since it always has to enter me all radio transmitters etc and also the radio code . Have just branched off the 24V continuous current and it ü over the voltage converter for radio installed continuous current is simultaneously Zündunsplus since I probably had a second voltage converter bellows. But would it so like to leave it working well, unfortunately only the thanks that the voltage converter is always too on voltage even in case of shelled radio ́/ truck and the small green LED light makes me worry ??? Or could the thing also get hot?