Preliminary Checks
- Alternator drive belt must be properly adjusted, the battery and connections must be in good condition, and the charge warning bulb and circuit continuous in order to properly test charging system.
- Polarity of alternator and battery terminals MUST be observed to prevent system damage. Warm engine 3-4 minutes before testing. (Output may be slightly higher when alternator is cold.) Battery ground cable should be disconnected when attaching jumper wires to alternator and regulator.