Here is a restoration of 2820408 convertible top switch with the attached 30 amp circuit breaker from a 1967 Dodge Dart. The issue with this switch was the knob locking in the up or down position. Heat from the contacts arcing melted the plastic sprung plunger that resets the knob to the off position. Along with the normal restoration, another plunger was machined and flattening the contacts to remove the arcing divots.