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The size of the wire (gauge) would be an indicator of the current designed to pass through the circuit. Putting a 1 amp fuse there if the circuit is designed for higher may lead you astray as it may blow due to its normal current flow. Your comment " I think I'm pretty safe comparing the length of the wires, long on one side of the break to short on the other side of the break and vice versa. " makes a lot of sense seeing as a harness assembled seems to follow that logic (unless they are normally exposed and jumbled where that damn bastard rat went to sharpen teeth). Leaving them disconnected and finishing the splice, then seeing if the car works/runs, would then let you know what circuit(s) to look up for the color codes your seeing. Two suggestions offered, your choice to consider. Good luck!


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