Automotive connector

[stuck oriole]

What up. Is this the other end of the wire hanging out above the wire you’re holding?

If so, do you have a lot of wire left on that side?

[heady helm]

That looks like a small coax type cable.
Might beable to get something along those lines?

[stuck oriole]

For splicing two wires the same side, I would use this technique! https://makezine.com/article/technology/computers-mobile/how-to-splice-wire-to-nasa-standards/