Best source for automotive wire

Cool, sucks cuz you need both sizes(and more) and you still havent covered the colors with tracers. Or the factory terminal ends. I must have $200 in wires and ends. Heres my mess currently.
If you decide to get a kit above, I may be interested in buying some length of wire?
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Also, you raise a great point. Is there a good reference that shows what gauge is for what wire, or are you just measuring each?