ZenOngaku

Hi guys Newbie here and I’ve just purchased a Ducati Monster which had ridiculous bar end indicators which were disconnected by the previous owner as they failed MOT. I purchased some bar end mirrors but am struggling to attach them. On previous bikes I’ve just screwed them in, but it looks like the wiring for the indicators went through the inside of the handlebars, so there is nothing for them to screw into. What can I do to attach my sexy new bar end mirrors?! Thanks in advance. Michael