ok so I’m about to wire in a few bits into my 90 but need a little advice

iv figured out the schematics as I believe to be correct but open to criticism as I’m no expert. I’m not 100% on amperage’s etc and figuring out which fuses, wiring gauges I require. I’m lead to believe if I go overboard I could be looking at voltage drop and if to low I’m looking at a fire

Ill post my schematics below and hopefully one of you chaps will be clued up and let me know exactly what I may need and point out my mistakes.

If someone can advise me on everything I’ll send an alcoholic gift to them

Welcome