i have a stray wire just like this as well if i remember correctly when i took out my centre console out of my ST esc cos(so no VECTA) AND ALL the lights work on the ciggy lighter/dash etc etc!!...its also the same colour AS the ciggy lighter light feed,so i was thinking its an extra feed for some extra you may want to fit later on,or maybe even a feed for the heated seat switch lights(thats if they light up?).......