Source for oil pressure gauge wiring?

[Carb]

Hey all,

I have noticed some of the wires in my 1967 f100 are crumbling, been chewed on or are otherwise exposed in parts... For instance, the wire off the oil pressure gauge - now i suppose I could patch it with solder, but would rather replace it, especially because of the unique contact it has.

Does anyone have a source for purchasing individual wires such as those, rather than entire harnesses? I haven't found a source yet.

thank you in advance,

Carb