Alternator and Regulator Circuit Test

Troubleshooting-Alternator/Regulator Test (Part 1 Of 2):

NOTE: Make sure the battery is sufficiently charged

Troubleshooting-Alternator/Regulator Test (Part 2 Of 2):

CAUTION: The voltage will rise quickly when the alternator is full-fielded. Do not allow the voltage to exceed 18 V; it may damage the electrical system.

NOTE: Attach a probe to the VAT-40 full field test lead, and insert the probe into the full field access hole at the back of the alternator. Switch the field selector to the "A (Ground)" position momentarily, and check the amperage reading.