That wiring may have been pushed between the deck and the inside hull liner. As doe the slides, you do not have to remove the hatch to replace these slides. Just push the hatch all the way open, go below, look up and mark the space behind the where the hatch stops, inside. Now slide the hatch forward and use a saw and cut the slide where you marked it, Now remove old and insert new ones.
Hayden...off Antigua