Hi Craig
I have one on my mc21 street . You can buy the hrc deristrictor for a street harness and they come with connections to splice it here is a new one here : http://www.japanauctioncenter.com/view2.php?seturl=http://page10.auctions.yahoo.co.jp/jp/auction/m70358886 Yours looks like a race deristrictor splice in which would work the same as the one with connectors