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Old 03-21-2019, 09:02 AM   #1
Mikendebbie
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Improving ground connections?

I am having an issue with my hydraulic system (separate thread) and I have been going thru my battery connections and checking ground connections etc.

I found an old thread yesterday about improving the ground connection.
It was from an older post - but I could not remember who posted it or when, and I searched for it last night and could not find it again.

Anyway - I disconnected one of my ground wires (battery is not hooked up and I am unplugged from shore power). It looks to me like the lock washer under the self tapping screw made a few pin-points of clean connection to the bare steel of the framing member - but the black factory paint is still intact.
Is that all that is needed for a good ground? or should I scrap off the paint to bare steel and reinstall the same lock washer and tapping screw, and get it good and tight? Or do I need to throw the self tapper away and go with a new bolt, nut and washer?

The post I found yesterday went thru a detailed step by step procedure to improve the ground connection. I wish I could find it again - but I thought I would cast the question out there and I will get the same good answers back.
Thanks in advance!
 
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Old 03-21-2019, 09:33 AM   #2
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Some paints are pretty good insulation
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Old 03-21-2019, 10:11 AM   #3
Creeker
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The self tapping bolt itself has cut through and directly connected to the bare steel. That is your ground connection. The star washer helps but is very little of the connection. Its main purpose is to keep the bolt tight.

As long as that self tapping screw is tight and making good contact to bare steel, your good. If you do away with the self tapper then I would recommend sanding the paint away.

My advice; Keep the self tapper or go one size larger self tapper if its loose.
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Old 03-21-2019, 03:25 PM   #4
mlh
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If you think you have a good connection you probably do. It’s not rocket science. You could take the paint under the wire. That would insure a good connection. Is it necessary? Probably not.
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