Have a 68 400 covt and I am reading about 17-18 volts (with hand held meter) when the car is running. I assumed it would be a bad battery, voltage regulator, or alternator causing the problem. I just replaced the battery and still see the problem, about 13-13.5 volts idle and 17-18 running. I notice the regulator is mounted to the front engine bay (driver side) by the radiator. Is this the normal mounting point? Also it's not a GM part (brand name "SELECT") and has a 4 wire plug, the alternator is Delco. Can I just buy a Delco regulator, is the wiring standard? Appreciate any help!!!