I bought a project boat this year a 1985 Four Winns Candia 190. The guy sold it to me with a 898, 305 5l Engine rebuilt on a crate in his garage. Long story short, I had a guy install it but did not complete the job. Now I am having a short problem. I was wonder the original engine was a Mercruiser V6, 3.1, is the wiring harness compatible. Are there any issues that I need to be aware of. I don't know that I can trust what this guy did. I did check the manual and
wiring diagram, but there are extra connections that are left. Is there a place I can get a more specific wiring diagram? Thanks for any help.