Power, Ground, and Field Wiring¶
Leave the engine off until setup asks for it
From here on, leave the engine off until Initial Settings asks you to start it, at Tachometer Calibration. The field resistance test, right after the Prerequisites screen, runs with the engine stopped.
The difference between P and N type alternators is in the field coil/brush assembly.
If one of the brushes is connected directly to Ground, this is P type, and the regulator operates by switching the other brush's connection to Battery +.
If one of the brushes is connected directly to Battery +, this is N type, and the regulator operates by switching the other brush's connection to Ground.
Any alternator can be converted from N to P and vice versa by rewiring the brushes.