What is this wire? (Bass Collection, SGC Nanyo)

[missis sumner]

An enforced break due to our studio burning down (well, not quite, I hope) and RSI (pain in base of thumb), has meant I have at least had time to work on my £75 Gumtree acquisition - a 5 string Nanyo...

Now, I've never taken a bridge off a guitar before, so I'm wondering what this wire is?

https://drive.google.com/file/d/1f7qzI9Gc73NBj_MY3mslzCH0Yq1NJSiW/view?usp=sharing

I'm assuming it's just an earth, and if I shove it back into its hole, just leaving the wires to contact the bridge, everything will be fine and dandy, in about a year's time, when I put it all back together?

On a positive note, I can also confirm that white vinegar and baking powder works wonders on gunk and superficial corrosion on all the gold hardware:

https://drive.google.com/file/d/10RB2Ktuecmc86T3XR7b6WJb3wyH9GCgi/view?usp=sharing

Only left it in to soak for about 5 minutes - I didn't want to risk complete lack of gold... reckon patina is the way to go... 😀

[BreadBin]

You assume correctly, that is the bridge earth wire.

👍

[missis sumner]

Lovely, thank you for the fast response.