A. Connect the charge rack to its power supply. (Direct wire rack connected to vehicle
battery; Standard rack connected to a known good power supply).
B. Measure the charge rack output at the charge pins at the front of the charge rack.
1. Place the positive meter lead on the charge pin located closest to the Red and
Green LEDs.
2. Place the negative meter lead onto the other charge pin.
Charge Pins
Positive Negative
3. The meter should show the supply voltage (11 to 22 volts).
a. If there is no voltage or reverse voltage check the wiring between the rack and
the supply (also check any in-line fuse).
b. If there is no reading the charge rack internal wiring needs to be checked.
(See below for testing procedures.)
Testing the Internal Wiring
A. Turn the charging rack over to expose its base plate.
B. Place a small flat screwdriver blade between the external power connector or strain
relief lug (direct-wire version) and apply a small amount of pressure. (See picture on
Page 25.)
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