Alternators “Kick Out The Amps Brothers And Sisters”

if your juicing your entire harness with 140+ amps, youll need to beef up the weak links, ie the amp meter and the feed wire gauge, but remember that anything will only draw what it needs (or can if it shorts, use fuses!). You can use some big 36-50W resistors in parallel
https://www.electronics-tutorials.ws/resistor/res_4.html
but it depends on what the amp draw of the devices needs to be. So you could make a high current circuit for your amp, your winch, your 50A (inrush) electric fan array and then keep your dash on a limited leg. ITs not so much as limiting the current (they only take what they need) its making the circuit that gets the power to the device up to snuff. You wont see 18G starter cable, and you wont see 6G headlight feeds. Build to spec.