If you find a manual for or Associated 6012B , the internal wiring and operation are nearly identical. Many Carquest units were white-label versions of these models.
For maintainable batteries (with removable caps), check fluid levels before charging and add distilled water if necessary. carquest battery charger cq 80cr manual
A: That is a heavy-duty mechanical relay or timer switch. It is normal for this design. If you find a manual for or Associated