I need to find a alternator that fits my 1988 Mercruiser 5.7 Alfa One 260 Hp. What is that thing thats attached to the rear of the alternator. I have the book but not showing enought details. My battery is always almost dead. I found some loose wires and one was disconnected? the picture is on the link below can anyone help. I'd like to get the replacement parts on e-bay. Thanks.<br />(Last picture) <br /> http://www.shareaproject.com/pages/tellAFriend,p,147,00.html