Fuse Box ??
 

I have a 1993 z235 Mariah bowrider, and while I was away on vacation, my son and a buddy of his replaced the radio and speakers as a surprise gift to the family. However, since then, the power seat and engine cover switches no longer work. It seems to me there must be a fuse for them since the two switches are wired together off of the same connector. Can anyone tell me if there is a fusebox or an inline fuse off for these switches and if so... where it might be? I bought my boat used and have no manual. Thanks so much!

Mariahman81