Not to scare you, but I had water travel down the inside of a couple of my wires to the radio, this was on my car. One day it went all crazy, find the leak and patch it, that sure looks like water that is rusting and running down the inside of one of your wires. Not sure what will happen if you get a short there either, hows the bike running, not missing or anything? Better yet replace that wire harness at the very least I would check it real good if your not replacing it. Sorry about not getting to this post sooner.