What is this pics included
 

Saw this on the back of my boat any idea?
http://i44.photobucket.com/albums/f9...3/f962c965.jpg
http://i44.photobucket.com/albums/f9...3/28c9353b.jpg

Is it plastic or a zinc? Wires on inside mounting bolts connected to motors?

Is it metal? Could be a sacrificial piece maybe?

Its an Anode and should be replaced when it gets a crust covering it. As said it should have a bonding wire on the inside of the boat running to a ground either on a stud at a bell housing or right to a battery.

looks like a secret transcepter beam locater,very hard to come by.:lolhit:

Hooked tO the Negitive post? Where can I get a replacment?

Here ya go.
http://www.boatzincs.com/MER43396.html

It's a zink used to stop electrolysis on metal parts.Is a must on boats that get left in the water.JOHN SR

Best to go to engine block on back where all your ground wires connect to the bell housing stud. All ground/bonding wires should really go to 1 single connection point.

You can check the site provided or any boating center should have them. There used on a lot of cruiser style boats and some center consoles.