Bob T

Hello all,
Recently my right side tach, fuel gauge, depth finder and speedometer quit working. I am guessing it is a fuse or wire harness came loose. I have taken off the front screws of the dashboard, but it is somehow attach at the front near the winshield. I didn't have tim to hunt around a lot. I am guessing it is attached underneath the dash somehow, maybe accessed from the "trap door" hatch underneath. Can anyone provide some help before I try to get at it this weekend? Thanks
Bob