Head Light Turn Signal Collar Set

Can anyone tell me what the purpose for these are?

z1parts.net/z1-kz900-kz1000-h1-h2-s1-s2-...0-head-light-collar/

I remember taking them off my 76 KZ900 decades ago when I installed different headlight ears. Not having them didn't seem to affect the turnsignals or headlights.

Bill

On the original assemblies the turn signals were grounded through the metal collars because the rubber vibration dampers isolated them electrically.

Good Ridin'
slmjim & Z1BEBE

Thanks. That's what I thought since the rubber dampers were removed and the lights still worked.