Exciter Diode
- Using an ohmmeter or a self-powered test light (40-volt maximum), check resistance or continuity between diode terminal "D+" and stator contacts, one at a time. Test light should glow or ohmmeter should read a low resistance when positive terminal of test light or ohmmeter is connected to one of the stator contacts. See Fig 1.
- Reverse ohmmeter or test light connections, test light should not glow or ohmmeter should give a high resistance reading. Replace diode is assembly if defective.