I have a 1964c #2799.  O-360-A1D. Left mag Slick 4347, right mag Slick 4370.  I want to replace the wire harness to my mags that were recently overhauled. The Kelly Aerospace application site says I should use KA14004.  I was at Spruce today in Corona and they agree with the application site.  However, the harness I have on the plane has these numbers, left M2513, and right M2512 a Slick harness.  This would correspond to a different part number for a different engine, a O-360-A4N Ques