Mercruiser 7.4 Electrical Problem

jmadisonbiii

Cadet
Joined
Jan 20, 2010
Messages
22
I was attempting to install a new alternator in my 1998 Mercruiser 7.4 MPI and did not disconnect the battery. I shorted the big orange wire and now have no power at the alternator, or anywhere else in the boat. I am assuming the orange wire goes to the starter. Where do I need to look to find the problem? Is there a fusible link between the alternator and starter? Thanks
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,245
There is a 90 amp fuse on the starter which looks like this.

90 amp fuse.jpg
Blue sea and others make them
 
Top