I would think you would want all circuits protected by fuses. My '77 has fuses for everything. I know I have pics of the fuseblock but can't find them. When I find them, I will post them.
I do have another wiring diagram though I don't know what years this covers. Essentially the same thing you already have.
Are you a facebook guy? The Mastercraft Project there is specifically for '68 - '85 boats with some guys that are really sharp regarding '76 and older boats.
REBUILDING HOLLEY MARINE 4160 CARBURETORS - $199 DELIVERED
GENUINE MARINE HOLLEY KIT USED - INCLUDES POWER VALVE UPDATE
LED TRAILER LIGHTS, LUG NUTS SPARE TIRE CARRIERS, SAFETY CABLES....
Originally Posted by Bouyhead
Installed my carb that was rebuilt by thatsmrmastsercraft, Thanks Peter!! Hot or cold this boat starts and runs like it fuel injected.