I just went through the experience of rewiring a LED headlight on my KZ400H, and I don't know why it didn't occur to me before to dig one up...so I dug around a bit and found this general Kawasaki Wiring Color Code - I hope it helps.
Also (and you probably already know this), before you do anything in the headlight bucket, take the time to take a photo or write down what connectors go to which connectors. The pin connectors are easy, but all those little bullet connectors in there can take you for a ride. No, you won't remember what wire goes to what wire, and it'll save you a lot of time when you put it all back together. I write them down on a Post-It note and stick it on the fender while I'm working. Saves you a lot of head-scratching. A 17"x 12" (or whatever it is) enlarged color wiring schematic printed out at Staples costs less than two dollars and glued to a piece of posterboard from the Dollar store helps too; it's hard to see what goes where when you're working from just the manual.
Good idea about enlarging the diagram. Last time I was rooting around in the headlight bucket, I planned ahead (doesn't always happen) and put a small piece of masking tape on both sides of each connector with a number marked on them, so I could match the numbers up when re-connecting the plugs. I've learned the alternative is having plenty of curse words ready.