Ok so to update on the situation, I left it for a month to get away from it and think then went back to it.

I got a new hilt side adaptor, re did all the wiring, and nothing, lights still don't work, which leaves the worry that something is wrong on the board. Any ideas on what I could do?

I was thinking of ordering another blade to see if by some off chance it's the blade

I've also made the hilt longer, as I realised it was too short