Folks,<br /><br />OK, I read the Clymer shop manual for my 82 Johnson 140 (or am still reading). I am trying to ID all of the pieces parts for my edification (I know a big word, had my Wheaties this morning).<br /><br />I see how to test the power pack, how it's connected, how to trouble shoot and replace, etc.<br /><br />I still don't know exactly what it does?<br /><br />Any help is greatly appreciated.<br /><br />Safe boating to all.<br /><br />Cheers.<br /><br />emp.