I'm installing a 2018 Mercury 150 into a boat that previously had a Honda. I need a top mount binnacle control and engine key switch/engine harness. I don't want anything fancy, just basic. If anybody can give me the part#s that would help me try to locate one. I might need a part# for a extension for the harness as this is going into a small houseboat and I haven't measured the length of the old one yet. Thanks