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Catalog - Page 28
889-Super RVC
Test Fixture

This test fixture will test all known types of General Motors vehicles using the small two pin oval voltage regulator connector (SB).  They are all marked "F" (computer communication from alternator) and "L".  The "L" terminal performs two functions in the RVC style regulators.  Not only does it act as the excitation point for the alternator, but after the alternator turns on, it is a  receiver for communication from the vehicle computer controlling voltage regulator set point.  Even though the terminal is marked "L' it does not control the dash indicator light in either application.  There is not a different designation for RVC or non RVC displayed anywhere on the alternator or alternator tag.

Test Bench Connections:
Red Wire:  Charge Light
Blue Wire:  Battery Sensing
Yellow Wire:  Auxiliary Wire
Green Wire:  Field
White Wire:  Stator Meter
Black Wire:  Secondary Ground

Click Here for Operating Instructions

889-Super 6G2
Test Fixture 6G

This test fixture will test all known types of 6G voltage regulators. 
They are marked:
A, Dummy, I (L/IG) (Standard w/o FR)
A, FR, I (L/IG)  (Standard w/FR)
A, SIG, FR  (Signal Type)-
Charge Light Not Used

Test Bench Connections:
Blue: B+
Black: B-
White: Stator Meter (FR)

Click Here for Operating Instructions
Test Box

This New AC Ripple Voltage Tester is designed to provide rebuilders
 with fast
accurate and precise AC Ripple Voltage readings
on any kind of alternator.

Why It Works:
The DC voltage input is filtered and removed to let only the AC portion of the signal reach the amplification section.  Once amplified the signal is fed into the microprocessor for a calculation of the average value of the AC wave.

Simple Operation:
Connect the Red Alligator Clip to the alternators battery post.
Connect the Black Alligator Clip to ground
The blinking LED indicates that you have the power on.
As soon as 0.1 of ripple is valid, the first LED becomes solid red.
Other LED’s will light up for each 0.1V increment, so total displace will show 1.0V ripple range.

Never disconnect the battery from the test bench during the test as this might damage the alternator’s regulator, your test bench or the ripple tester.

Working Voltage Input - 6 Volts to 24 Volts DC
Maximum Input Voltage - 36 Volts
Maximum Current Consumption - 225mA
Frequency Response - 50Hz to 16KHz (Sine Wave)

Important Facts:
Each alternator has a different ripple voltage chart.  This being said, one thing remains constant and that is that in a low load condition the ripple voltage is the minimum and in a fully loaded alternator the ripple voltage is the highest.  Also, it’s important to take into consideration that test results might vary between different teat benches...because things like wire length, battery condition, etc. will affect results.  That is why we recommend hooking the tester directly to the alternators positive and negative terminals.
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