Greg Teufel K7VHV Imperialist belleterrier@xxxxxxxxxxxxxx Hi Folks, There has been much discussion on intermittent headlights on the 66 Imperial. The original switches were only riveted together, after time and use, the rivets become loose causing intermittents and heating within the switch. If left for an indefinite period, the heat can and will destroy the plastic connector that joins the switch and the wiring, not to mention the switch itself. I suggest replacing the headlight switch with one that is riveted and SOLDERED, this type will provide many years of service. Another problem with mid 60's Chrysler products is lack of locking washers on the ammeter connections. Many Mopars left the factory with only 10/32 nuts holding the wires on the ammeter studs, over time the nuts become loose causing all kinds of electrical malfunctions, because much of the cars power circuits passes through the ammeter circuit. Sincerely,. Greg Teufel K7VHV Imperialist