Huh, I wasn't suggesting you remove the killswitch, but I haven't read the other post yet. the wires in there are lights, the browns are grounds, the black one connects to ground to kill the spark when the witch is switched to off. looks like maybe your black wire is off on it's own anyway? if that gets grounded it kills spark.
just the past month I've worked on 3 tomos and 2 of them had unsoldered wires under the killswitch. crazy. but both were lights issues.