The chances of finding one are somewhere between slim and none, and are fairly generic in how they are wired. There are some generic wiring diagrams in the stickies at the top of this forum that can give you some basic color codes. What kind of a problem are you having, normally the diagrams don't help that much anyway.
But are you sure that is how your motor is setup? Not all Merc outboards use that system. Besides, do you know how to test that module? Are you sure you don't have an overheat alarm too?
Motor problems should really be posted in the Merc/Mariner forum, even if electrical. This forum is more for accessories and boat wiring, not motor wiring.