Quote: Are you sure you have NAPA mechanical units? How heavy are they? If light they are electronic. If they have some mass to it, it mechanical. NAPA sells both kinds.
The mechanical version NAPA sells has two screws to remove the cover to service the contacts(made in china) Just get an electronic one from where ever NAPA or Autozone then cut the screw tabs off the mechanical cover and glue it over the electronic one to make it look big.
