Not charging 350 Merc

BIL can use some help on this one.

Last year, batteries dead from electronics left on. After charging batteries, no output from alternator.

Shop says fusible link bad. Replaces. All is well.

This year batteries dead from electronics left on. Jump started from stand alone battery. Engine runs. No output from alternator.
Engine does not run without stand alone battery.

So, we look for the "fusible link" or any other fuse we can find. We find nothing. While looking, we find orange wire next to alternator disconnected and taped. Pretty sure this isn't factory shipped this way.

Does anyone have an idea on this?

2009 Rinker. 350 Merc. Gen 3 outdrive.

BIL is strictly a "take it to the shop" guy, not mechanically inclined.

Re: Not charging 350 Merc

The Orange wire goes from the Alternator output to the starter solenoid through a 90 AMP fuse FUSE ASSY - 90 AMP - Mallory 9-15510 - iboats Not knowing what has been done to the boat this wire may have been replaced by someone else, just don't know. Wiring diagram can be found below.

http://www.google.com/url?sa=t&rct=...4qQi8VZFY1JEgo10g&sig2=FQ62ekKNheUqFvKHhr1w7w

Re: Not charging 350 Merc

Thank you Alldodge. This information is helpful. Will try to talk the BIL in to spring for manual.