1984 t25, round headlights.
I've just took out the old tnugston bulbs and replaced them with the halogan converters. However, whilst messing around, I noticed that, when the normal driving lights are on, and I flash

Is this the way these work? As I cannot find a fault when I tested the wiring (and spending about an hour on it, and superglueing me fingers together, don't ask)
Thanks
Kris