You need an alternator with a fast curve in it. Alternators that we’re designed for modern cars have greater output at lower rpm than old designs. Get a denso that fits a modern era car/ truck. I also recommend using a voltage regulator instead of one wire setups.
I will add I run my CS130 with a sense wire, and a charge light so its essentially a 3 wire deal. I run the sense wire to my power distribution point where 95% of my stuff gets it power.
