Large Diameter (16Mm) Ring Terminal For Earth

[ali2992]

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?

[nicko]

What about a suitable sized washer, or cut 1 out of steel sheet?

HTH

Nick

[ali2992]

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

[richyb66]

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.

[fry61]

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 July 26, 2015 by florin metal works

[richyb66]

Great minds Bob!

[ali2992]

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

[richyb66]

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.

[Tim Norman]

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

[Bob Tucker]

I'm with Tim....

one of the CBS extruded ally pipes already has a bolt tapped into it....

http://www.carbuildersolutions.com/uk/in-line-temp-sender-housingair-bleeddrain-38mm

[Dave R]

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

[Longboarder]

Almost sure the sender will be NPT and doesn't bolt down to trap a washer. Drill and tap like Tim said.

 

Nigel

[fry61]

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

[ibrooks]

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

[Tim Norman]

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