Poweramp SEMI AUTO TRUCK RESTRAINT 11_96 - Manual (Page 13)

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3. If signal lights, either inside or outside, fail to operate or operate incorrectly:
NOTE: Both sets of lights are controlled from the same control box
switch.
A. Check bulbs. Replace as required.
B. Check on/off switch. Repair or replace if needed.
C. Check electrical power source.
4. If restraint is equipped with automatic light control and lights do not
change properly, test relay in control box and proximity switch on restraint
for proper operation.
Maintenance/Troubleshooting