We have a corner shower that is leaking but not from the drain or the pipes. Blocked the shower head and nothing leaked the drain appeared OK as the leak found it's way to a hole were a wire was ran. This is a 3 sides and a bottom base. Any ideas on what or were the leak could be coming from.

We have a corner shower that is leaking but not from the drain or the pipes. blocked the shower head and nothing leaked the drain appeared ok as the leak found it's way to a hole were a wire was ran. This is a 3 sides and a bottom base. any ideas on what or were the leak could be coming from.
... going to? Is it beneath the unit, in the wall, the outside perimeter of the unit, etc? What does a wire have to with it and where does the wire run with respect to the unit? In short, shutting off the water supply eliminates the leak? Please elaborate...