yeah the wires are supported by the main harness and nothing moves.
When I first did it I wanted to put some sheetmetal in there because I was affraid of water kicking up. Well I never got around to it during my "unpainted testing phase", and got caught in a horrible thunderstorm. Next day I went and checked it out and there was no sign of any splash at all. Not even on the swingarm and hardly any on the back of the bracket. So I left it open and havent thought about it since.
Oh la di da, Carl's got another awesome variation big surprise...haha