cars change, charging systems an management do as well.. end of the day you need capacitors. Did car audio for 10 years. Insane stuff.. big 3 is real.. you need it. But without caps you’re limited. Hit up the 12volt forum. There are simple free calculators on the app stores.
not trying to dismiss what you are all saying, but this is easily solved with a multimeter and math. The tools are out there.. but end of the day, almost all applications will be slightly different.
uhg, probably sound like a d1ck.. apologies.. but you need caps