ALTERNATOR OUTPUT
Ok I just have to ask...
- Your voltage testing device is measuring DC volts and you have it on the proper scale ( 20v scale is common to use for cars)
- You know the difference between AMPS and Volts?
- You have a 12v car battery, 24v batteries can be the same external size
Questions
- When you measure 26v at the alternator terminal what does it measure across the battery?