I have been having ongoing electrical problems with my '69 Mustang and have taken it to 2 mechanics who have been no help. The problem is simply that the battery will not charge. I have done pretty much everything: replaced the alternator twice, replaced the regulator, starter coil, starter relay, solenoid, battery, connections to battery.
At idle speed, there is about 10 volts coming into the battery (about 14 are needed), and at 2500 rpm, this rises to 12.5 volts -- the car turns off when the cable is disconected from the negative terminal.
I have absolutely no idea what is wrong because I have replaced everything that needs to be replaced. Does anyone know what could be wrong?