Anybody know where I can find a wire harness connector that would plug into the main connector on the Merc. engines?
I need the end that would be wired to the boat, I'd like to make a connector to use on a engine dyno.

How many pins in the connector you want?

CP Performance sells them. They have them with the plug and about 1' of wire if you were just changing the plug in the boat. They also have longer ones , but they will probably be to long. Your best bet may be the short one and you can just add to it as needed.
Eddie

got one from a 1996 5.7 carb lx $10 tyd