Recently I am having a strange problem. I have used user T8up's numberplate LED's since the 80's no problem, but more recently a strange error has developed and I am confused.
Ignition off > lights on - the numberplate lights work fine
/* However */
Ignition on (car running) > lights on - the numberplate lights are out and error on dash
Has anyone ever come across this problem? I have had a look at the connections and the holders seat fine. Where next to look?