Is the headlight switch earthed

[Howard]

Hi All, should the headlight switch itself be earthed ?

[trevinoz]

NO.

 Trev.

[duTch]

Yup- What Trev said, but to extrapolate a bit, I'm not a 'lectrician, but reckon I'm smart enough to suggest that a switch controls whether power flows from point 'A' to point 'B',(and continues to point 'A' with loss in between-kind of like a circuit),or not. Please correct me if I'm wrong? cheers duTch

[bsa-bill]

Hi Howard - no need to earth the switch but always a good idea to run an earth from the headlamp (shell or sometimes the bulb holder will have provision for an earth) to a point on the frame, if possible right back to where the battery is earthed to the frame.
The original wiring lets the current fight it's way back to earth through the grease and balls of the head bearings, it works but is hardly ideal.

[Howard]

Thanks BSA-Bill, I fitted a new loom, all hooked up correctly however due the the thickness of the powder coat I could not get it to earth. So I did as you suggested and run an earth wire back to the battery, now every thing works as it should.