Hmm. I don't know how sensible it is to put a light behind a pair of ML's. I know from bitter experience how fragile that curved electrostatic driver is.
Mine disconnected themselves just sitting there. I repaired them by putting small discs of conductive foam through the holes at one side in the front cover, then a thin wire contacting the foam, then Kapton tape. The wire went inside and was hard wired into the energizing transformer. They were out of guarantee, and there was no way I was going to pay for a new set of panels so I got creative.
I was not impressed with their reliability, candidly. Sounded great when they were working though.
All the repair was behind the wooden trim strips, and so was invisible.