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Maintaining a good earth connection

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Sesman:

--- Quote from: SteveW on November 20, 2024, 09:18:51 AM ---Tell tale signs of a bad main battery earth to the frame. The current uses the small green earth wire instead.

--- End quote ---
.

I checked my battery negative connection prior to connecting the ignition earth. Both connections need to be checked for continuity/conductivity independently to avoid the issue you have experienced.

Mike_Berkshire:
Thanks for the thoughts hunts and tips team!

Mike_Berkshire:
I have made sure all the mating surfaces are paint-free and fitted a new earth strap to the battery/engine mount plate. Measuring resistance between the battery earth terminal and various points on the bike such as the engine block, rocker cover etc I get a reading of 0.2 Ohms. That seems OK?

McCabe-Thiele (Ted):
My 500 had an extra earth cable fitted similar gauge cable to the battery earth connector fitted  by a PO (not Bryan as I asked).
I failed to take a photo of where it was fitted on strip down,  thinking that's a good idea I'll fit that back there on assembly. The cable is in my spares box, for if & when I remember where it goes.

0.2 Ohms - I have no idea if that's good or bad, I went for plain voltage drop (well lack of) in my ignorance.

Bryanj:
Thats probably zero unless you have a meter where you can set the zero and is pretty good

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