[Vwdiesel] 1990 Jetta (A2) light blinking

[brian gochnauer]

The yellow glow plug dash light comes on and operates normally as the glow
plug /start indicator, but after start it will blink at about 1 second
interval, sometimes fading slowly in and out.

After a few minutes of driving it stops blinking and stays off.
 It's not a bad wire, it's too predictable.

What is it trying to tell me ?

Thanks
BrianG