Voltage drop

It’s a 65 amp After roughly adding up a bunch of my amp draws. Just guessing it’s going to need an alternator. Ignition is msd 6al2. So there .7 to .9 amps per 1k rpm. Dual Bosch 044 pumps. 13-15 amps each. Just broke my 4 post battery kill switch. One if the smaller 8-10 size wire was falling apart and barely on the post. Thinking it may be that. Waiting for me battery kill to get here. But for the mean time. Just going to connect it straight to the battery with the alt wire and see if that was it.