Re: Diagnosing charging system, external regulator
I had a charging issue one time as well. The Generator light kept staying on and the car would not start sometimes, so we tested the Alt, the fuse box, grounds, battery, ext regulator, windsheild wiper motor, checked all the switches, etc... The voltage regulator was not functioning properly and not sending eough volts from the alt to the battery. It was the cheap a** autozone voltage regulator. I went to Oreily's popped a new one on, and 3 months later, it starts like the motor is going to jump out the hood. I use my 69 as a daily driver. I went back and made sure all my wires were solid and wrapped in electrical tape. It looks cool because you really cannot see the wires in the engine compartment.
I also replaced the pig tail at the alternator and voltage regulator.....prob about $4.99 a piece from Oreilly's. Made sure I had good connections and tried to keep they wires way from the engine as much as possible. The wires running from the alternator, I wrappd them really solid as these blocks can get pretty hot. They run right between the valve cover and intake manifold.
As far as accesories I have a Viper Alarm with 3 millions options on it, Kenwood radio etc....
As for mods.....just make sure you keep in mind that your mods will affect the basic system so if you add amps(stereo amps etc...) or tv's etc... mods will come. But mods like using a high ampage Alt 55-61amp standard to a 100-200amp alternator or an extra drycell battery. They also have a alt crossover but once again thats another convo.
Sounds like a ext voltage regulator problem. I have bought them from the store before and they were bad right off the shelf. It is like your brain for voltage or filter.