Re: Single wire alternater oops...
More than likely the run on is caused by the so called '1 wire' conversion.
The battery terminal, (BATT) in hooked up internally to the other connections on the regulator.
There is no way to do this correctly. All one wire hookups are a compromise.
The #'1' terminal is supposed to be for the 'Idiot' light, and puts out 12 volts positive at considerable amperage when the alternator is charging.
In a one wire alternator, this terminal is wired to the 'BATT' terminal internally, and will self energize even if the key is off.
The power is probably getting into the ignition system at either the coil feed wire, (often used to power the switched side of alternators) or it's getting around or through the starter solenoid. There is an ignition circuit on almost every starter solenoid, and if the wiring is wrong, or the terminals are touching each other it will keep running. That's where I would start looking.
So many cats, so few recipes...