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Maintaining a good earth connection

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Mike_Berkshire:
I have learned the importance of a good earth on my bike after having replaced burnt out green wires in both main and sub harnesses. There is no paint now on my rear top right engine bracket and I am going to ensure paint is removed from the coil mounting earth point and where the engine bracket touches the frame. Should I protect these earth points from corrosion using a little grease or something once the connection has been made?

McCabe-Thiele (Ted):
That's an interesting question Mike,  in the olden days that I remember you cleaned up a battery terminal then added grease to the outside of terminals afterwards to keep the moisture out.

Greasing the contact point itself wiould make a poorer contact unless the grease used was conductive, it will be interesting to read the contributions on this subject.

Sesman:
Interestingly I didn’t remove any powder coat in those areas and still have an excellent earth. If the earth connection point is a bolt through(eg a fixed thread in the frame or a welded nut) then I’m unclear why removing paint is necessary?. I’ve tested my connections for conductivity and all appears to be fine.

I cover all exposed connections with Vaseline (petroleum jelly). I also press Vaseline into all the crooks and crannies in the mudguards (the 500/550 rear mudguard is a prime candidate) to prevent ingress of moisture.

SteveW:
Tell tale signs of a bad main battery earth to the frame. The current uses the small green earth wire instead.

ST1100:

--- Quote from: Mike_Berkshire on November 20, 2024, 07:40:13 AM ---Should I protect these earth points from corrosion using a little grease or something once the connection has been made?
--- End quote ---
I've made good experience with a squirt/whiff ACF-50 on such grounding points...

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