I have a 1962 or 63 75 horse johnson with electric shift that I need help with wiring on. Model number V4A-15-E. Serial number 2289916. I'm mostly trying to wire in a new switch right now. I have a repair manual with wiring diagrams. But only lists 62 and 63 with a standard shift. And electric shift only up to 61. Neither of the wiring diagrams for either seem to be matching what I have. So I'm not sure if I'm misidentified it. Or there's another model engine thats not being listed in my repair manual. Thank you in advance.