I've returned a main relay and the fuel relay once before to AutoZone and they had no problem taking it back. Now I don't know if it's because I know the manager but they were perfectly fine giving me a brand new relay. I suppose it depends on the person your speaking with at AutoZone...
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1991 Honda Civic Hatchback Si complete USDM OEM Honda restoration in the making.
TR "Old Skool EF" Member #208
Cell: 727-452-7280