Last year I fit a Truck Lite 27270C headlight in my KZ1100. It fit very well physically, but not as well after that.
With the ignition-key turned on, the beam-out (white) indicator lamp would stay lit, and the (blue) high-beam indicator and the HI-LOW beams would inconsistently turn off when switched.
Rather than addressing this and correcting the problem at the time, I chose to remove the indicator bulbs from the tachometer, and leave it at that. But the inconsistent switching is still a problem.
Not sure how to fix this.
I have that same light.
It sounds like a loose connection. Can you get it to happen when the bike is sitting still or does it happen when you hit bumps?
The beam-out indicator is a result of led's i'm guessing. I have that problem with my brake light indicator.
If it is affecting both high and low beams it is probably a loose ground, bad switch or 12v positive wire issue leading up to the switch. The 12v positive wires leading from the switch to the light are probably ok.
81-KZ440-D2. Louis Dudzik's GM HEI ignition module converted 2015--no issues, Motogadget m-unit blue.