Help Blue wire fell out from behind Maggie 1.6's

I updated my Maggie 1.6's according to Ed Hsu's recommendations, Alpha Core inductors and Hovland capacitors. I recently moved to New Mexico and while I was setting up my Maggies and rewiring these upgraded components to the original wires, I noticed that the BLUE CABLE fell out!!!!!!!

The blue cable comes out from underneath a wood "frame" (at the top) that I can not see behind. Can anyone who has performed this kind of upgrade to their 1'6's help me to reattach the Blue cable?

I am beside myself, because I waited months to hear my Maggies and now I must wait until I can fix it myself (?) or find a repair shop, hopefully not to far away, that can do it for me. Sigh!!!

If you can help I would deeply appreciate it.

Thanks in advance-Richard