I would like to know if 1973 Evinrude 65 hp electric shift controls can be replaced with 1970 Johnson 60hp electric shift controls? I replaced my my 1970 Johnson 60 hp Johnson motor and controls with an Evinrude 65 hp (65273S) motor with selectric pushbutton controls. I prefer the Johnson controls over the Evinrude. Are they compatible with each other? It looks like the harnesses are the same. I just don't know if they control wiring is the same.