Back story:
One night driving my car just dies... so i pop the hood and look around and see a split wire from the starter. I looked like it was either already cut and was barely held on or it had melted... so i manage to stick one hand down there against the hot *** manifolds... and was able to twist the crappy wire ends together and wrap some electrical tape around it...

Questions:
What is that wire called? I think it was red. Starter wire? Positive wire?
Also where could I find one? General auto parts store?
And how hard would it to be to replace? What all is involved?

Pics:
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Looking down through manifold: the orange or red wire with electrical tape wrapped around a section...

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Another view from a top through manifolds:

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This is the loom it comes from: 2 wires go to alt, rest of loom goes behind engine...

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This is looking from front of engine at eye level with starter:

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Not sure how that wire got cut/split like that, but either get a better more permanent solution for reconnecting the two ends (like a nice guage butt connector wrapped in electrical tape or solder it), or get it replaced. It's a fusible link - there are several as you can see that connect to the starter - not sure which one it is, you'll have to trce it down and see where it goes if trying to replace it.

If it were me, I'd get a good secure butt connector crimped on it, wrap a bit of electrical tape around it, and then get all those fusible links wrapped inside a wire loom all the way up to the starter to protect them. Then you should be good to go!