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Large Diameter (16Mm) Ring Terminal For Earth


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Guest ali2992
Posted

The water temp sensor I have doesn't have an earth connection, and it goes into one of car builder solutions cnc'd aluminium housings that also has no earth connection. The temp sensor is 16mm, so I'm looking for a ring terminal that has a diameter of 16mm, which is rather hard to find. RS Online have some, but in packs of 25, costing £20 - which is a lot when I need one ring terminal. I'd rather not drill into the housing to make a custom earth connection. Does anyone have any ideas or know of anywhere that sells large diameter ring terminals?

Guest ali2992
Posted

I was thinking of that, but then I need a nice secure way of attaching the wire to the washer?

Posted

Strip 55mm of the wire, twist the conductor strands together then wrap this around something 16mm diameter finally solder the wire to form a closed loop.

Posted (edited)

Make a washer from heavy (2.5mm ) single conductor copper wire with a tail, all soldered to a flexible flying lead & this to earth.

 

(Never used to win at "SNAP" either )

Edited by florin metal works
Guest ali2992
Posted

Ah that's a good idea! Would that be acceptable iva wise?

Posted

It should be, For neatness you could put heatshrink on the wire first and then run it up tight to the soldered loop and shrink it down.

Guest Tim Norman
Posted

Could you not drill and tap a small hole on the housing?

Posted

May have something suitable in my van.... remind me in the week

Posted

Better thinking by Tim & Nigel --- if you tightened the sender down to trap a washer you may split the housing .

Posted

So what does the ally housing connect to?

 

Temp senders don't usually have an earth - they get it from screwing into something metal like the head or block. On the A-Series the later ones went into the stat housing which is a separate ally lump but it's bolted to the block so all earthed via the block to body straps.

 

Iain

Guest Tim Norman
Posted

Just run a wire to ground from your newly tapped hole.

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