Entering vague description mode.
I am almost positive this was a made for TV movie or miniseries, and I remember it being on in the mid-80s, although I couldn’s ay what channel. The vague plot points I remember are:
Aliens came to earth.
They seemed friendly, but really weren’t.
They would touch people’s foreheads, which would slowly make the people shrivel up and turn into floating balls of electricity.
In the end, I think humans figured this out and somehow defeated the aliens and reversed the process.
I know it’s not “V”, but I bet it is some kind of cheap knock-off. I also know the description sounds crazy, but it can’t be drug induced as I was only about 10 at the time.