I guess I am wondering if anyone what kind of power is available on the stock electrical system. It would be nice to know before you just keep adding stuff till you began having problems. I know the rule of thumb always has been 13.8 to 14.6 V while charging on any 12V system. I guess if you were just monitor the voltage level till the nominal voltage starts to drop you would know what is to much! Some of the big boomer audio systems today will kill a V8 without a second battery and a massive alternator.
Anyway I always like to have the actual spec's......

