Thank you. My life would be hopeless without those labels. Having 20 loose wires that all look the same without any labels? I don't want to think about it! Now, I do have to say that I love the military wire identification system more than any other. There's zero doubt about where a wire goes when you can grab it, look at a number, and reference that to a unique position on the schematic...no finding the odd wire that has has a blue jacket with a white and brown stripe...and then discovering that there's four of that same wire color pattern, but you have to know which sub-system it links to ahead of time.
The only "ugly" part I've seen so far is when a wire has a connection number change in the middle of its run. I see this on wires that are branched (such as the sensor ground wire, which has a part A, B, C, D, E, F, and G). While it's actually really helpful for building this harness, it gets confusing when trying to trace a wire across a long run from end to end. Also confusing is how sometimes, they seem to be numbering the connector and other times, they seem to be numbering the wire itself, but I don't seem to see any notational differences to this....