Mercury/Mariner are the same motor after the late 80s. Only difference between them is the tag that says what color to paint it and what decal package it gets. Buy the Mercury manual for that serial # and fix your motor.
So you feel attacked because I corrected what you said? Then I explained the difference to you and you feel attacked? Then I ask you what your motor has to do with the OPs because you have a 95 115 and the OP has an 82 50 hp. and you feel attacked. I did not see the commonality between those 2...
CDI is what OMC calls their switch boxes. Mercury just calls them switch boxes. Same thing different name. CDI is not a brand name. CDI electronics used to be called Rapaired. So something happend and they just changed their name to CDI electronics. CDM modules are altogether different.