Alternator Gauge Reading High With 300 Watt Stereo System Installed---1969 Electrical System

Thanks again for the additional posts. Learning a lot here...maybe too much hahahaha. Now you guys are starting to scare me. Its ok. I ran around with a fuel leak spraying into the bottom of my ignition coil with a hole in it hahahahah. Yep true. Me and this car should already be dead..............a few times..........but I digress pffft hahahah. So another good mechanic friend of mine at my friends shop said that if I add a larger cable between the alt and battery, that it could help send more current to the battery from alt which is willing to give, but wiring can't send. He also said that my electrical system draws so little, that I have room(amps, volts, watts...whatever) to spare/play with. I understand the concept of a capacitor, it gets charged, holds charge, then discharged when needed n charged again waiting for a heavy draw. I'm actually at my friends shop now, but was playing with my a/f mixture on my carb and having a few beers:). I mentioned this whole thing to him and we will check it out sometime this week. Thanks again and again and again. I really appreciate the time and knowledge you're spending on me and my car:thankyou: