Transformer: Aero+, Vectra II

"Transformer for the Aero and Vectra II Series, 1997-1999. NOTE: WHEN REPLACING THESE TRANSFORMERS, YOU MUST WIRE THEM IN THE SAME CONFIGURATION AS THE ONE THAT IS BEING REPLACED. IF THE WHITE WIRE IS NOT INSTALLED IN THE PLUG ON THE OLD TRANSFORMER, YOU MUST REMOVE IT FROM THE NEW TRANSFORMER PLUG BEFORE INSTALLING."