If you have the engine vin number, you can go to
mercury parts express and see exploded diagrams. You have to set up an online account (top right corner of page) and choose a local dealer. Once you set up your online account and login, there will be an option to enter your engine VIN number in order to search for parts. This will route you to the correct parts listing with the diagrams including the wiring. I dont think the wires will be color coded though in their diagrams but I could be wrong.